diff --git a/Pipfile b/Pipfile
index 84a410f51..e4f037b19 100644
--- a/Pipfile
+++ b/Pipfile
@@ -4,38 +4,76 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
-django = "<2.1,>=2.0"
-pillow = "*"
-coveralls = "*"
-dateparser = "*"
-django-cors-headers = "*"
-django-crispy-forms = "*"
-django-extensions = "*"
-django-filter = "*"
-djangorestframework = "*"
-factory-boy = "*"
-filemagic = "*"
-fuzzywuzzy = {extras = ["speedup"], version = "==0.15.0"}
-gunicorn = "*"
-inotify-simple = "*"
-langdetect = "*"
-pdftotext = "*"
-pyocr = "*"
-python-dateutil = "*"
-python-dotenv = "*"
-python-gnupg = "*"
-pytz = "*"
-sphinx = "*"
-tox = "*"
-pycodestyle = "*"
-pytest = "*"
-pytest-cov = "*"
-pytest-django = "*"
-pytest-sugar = "*"
-pytest-env = "*"
-pytest-xdist = "*"
-psycopg2 = "*"
-djangoql = "*"
+coveralls = "==1.5.1"
+dateparser = "==0.7.0"
+django-cors-headers = "==2.4.0"
+django-crispy-forms = "==1.7.2"
+django-extensions = "==2.1.4"
+django-filter = "==2.1.0"
+djangorestframework = "==3.9.1"
+factory-boy = "==2.11.1"
+filemagic = "==1.6"
+fuzzywuzzy = {extras = ["speedup"],version = "==0.15.0"}
+gunicorn = "==19.9.0"
+langdetect = "==1.0.7"
+pdftotext = "==2.1.1"
+pyocr = "==0.5.3"
+python-dateutil = "==2.7.5"
+python-dotenv = "==0.10.1"
+python-gnupg = "==0.4.4"
+pytz = "==2018.9"
+tox = "==3.7.0"
+pycodestyle = "==2.4.0"
+pytest = "==4.1.1"
+pytest-cov = "==2.6.1"
+pytest-django = "==3.4.5"
+pytest-sugar = "==0.9.2"
+pytest-env = "==0.6.2"
+pytest-xdist = "==1.26.0"
+psycopg2 = "==2.7.7"
+djangoql = "==0.12.3"
+whitenoise = "==4.1.3"
+alabaster = "==0.7.12"
+apipkg = "==1.5"
+atomicwrites = "==1.2.1"
+attrs = "==18.2.0"
+certifi = "==2018.11.29"
+chardet = "==3.0.4"
+coverage = "==4.5.2"
+docopt = "==0.6.2"
+docutils = "==0.14"
+execnet = "==1.5.0"
+filelock = "==3.0.10"
+idna = "==2.8"
+imagesize = "==1.1.0"
+more-itertools = "==5.0.0"
+pluggy = "==0.8.1"
+ply = "==3.11"
+py = "==1.7.0"
+pyparsing = "==2.3.1"
+pytest-forked = "==1.0.1"
+regex = "==2019.1.24"
+requests = "==2.21.0"
+six = "==1.12.0"
+snowballstemmer = "==1.2.1"
+sphinxcontrib-websupport = "==1.1.0"
+termcolor = "==1.1.0"
+text-unidecode = "==1.2"
+toml = "==0.10.0"
+tzlocal = "==1.5.1"
+urllib3 = "==1.24.1"
+virtualenv = "==16.3.0"
+Django = "==2.0.10"
+Pillow = "==5.4.1"
+inotify_simple = "==1.1.8"
+Sphinx = "==1.8.3"
+Brotli = "==1.0.7"
+Babel = "==2.6.0"
+Faker = "==1.0.2"
+Jinja2 = "==2.10"
+MarkupSafe = "==1.1.0"
+Pygments = "==2.3.1"
+python-Levenshtein = "==0.12.0"
 
 [dev-packages]
 ipython = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index 29032f6bb..9bc0f51f8 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "971e0c975821925652865e34eed1c668bc6f52bb8217b776f35e87a66c936e1b"
+            "sha256": "a87b309c10b65c7767094c13538e3233250022a2a93a6b0deea2ec779bc3161e"
         },
         "pipfile-spec": 6,
         "requires": {},
@@ -19,6 +19,7 @@
                 "sha256:446438bdcca0e05bd45ea2de1668c1d9b032e1a9154c2c259092d77031ddd359",
                 "sha256:a661d72d58e6ea8a57f7a86e37d86716863ee5e92788398526d58b26a4e4dc02"
             ],
+            "index": "pypi",
             "version": "==0.7.12"
         },
         "apipkg": {
@@ -26,6 +27,7 @@
                 "sha256:37228cda29411948b422fae072f57e31d3396d2ee1c9783775980ee9c9990af6",
                 "sha256:58587dd4dc3daefad0487f6d9ae32b4542b185e1c36db6993290e7c41ca2b47c"
             ],
+            "index": "pypi",
             "version": "==1.5"
         },
         "atomicwrites": {
@@ -33,6 +35,7 @@
                 "sha256:0312ad34fcad8fac3704d441f7b317e50af620823353ec657a53e981f92920c0",
                 "sha256:ec9ae8adaae229e4f8446952d204a3e4b5fdd2d099f9be3aaf556120135fb3ee"
             ],
+            "index": "pypi",
             "version": "==1.2.1"
         },
         "attrs": {
@@ -40,6 +43,7 @@
                 "sha256:10cbf6e27dbce8c30807caf056c8eb50917e0eaafe86347671b57254006c3e69",
                 "sha256:ca4be454458f9dec299268d472aaa5a11f67a4ff70093396e1ceae9c76cf4bbb"
             ],
+            "index": "pypi",
             "version": "==18.2.0"
         },
         "babel": {
@@ -47,13 +51,49 @@
                 "sha256:6778d85147d5d85345c14a26aada5e478ab04e39b078b0745ee6870c2b5cf669",
                 "sha256:8cba50f48c529ca3fa18cf81fa9403be176d374ac4d60738b839122dfaaa3d23"
             ],
+            "index": "pypi",
             "version": "==2.6.0"
         },
+        "brotli": {
+            "hashes": [
+                "sha256:0538dc1744fd17c314d2adc409ea7d1b779783b89fd95bcfb0c2acc93a6ea5a7",
+                "sha256:0970a47f471782912d7705160b2b0a9306e68e6fadf9cffcaeb42d8f0951e26c",
+                "sha256:113f51658e6fe548dce4b3749f6ef6c24de4184ba9c10a909cbee4261c2a5da0",
+                "sha256:1e1aa9c4d1558889f42749c8baf846007953bfd32c8209230cf1cd1f5ef33495",
+                "sha256:2f2f4f78f29ac4a45d15b3d9fc3fd9705e0ad313a44b129f6e1d0c6916bad0e2",
+                "sha256:3269f6de1dd150fd0cce1c158b61ff5ac06d627fd3ae9c6ea03aed26fbbff7ea",
+                "sha256:50dd9ad2a2bb12da4e9002a438672d182f98e546e99952de80280a1e1729664f",
+                "sha256:5519a4b01b1a4f965083cbfa2ef2b9774c5a5f352341c47b50776ad109423d72",
+                "sha256:5eb27722d320370315971c427eb8aa7cc0791f2a458840d357ac653bd0ad3a14",
+                "sha256:5f06b4d5b6f58e5b5c220c2f23cad034dc5efa51b01fde2351ced1605bd980e2",
+                "sha256:72848d25a5f9e736db4af4512e0c3feecc094d57d241f8f1ae959115a2c39756",
+                "sha256:743001bca75f4a6b4454be3510feca46f9d61a0c782a9bc2bc684bdb245e279e",
+                "sha256:9d1c2dd27a1083fefd05b1b2f8df4a6bc2aaa6c21dd82cd41c8ae5e7c23a87f8",
+                "sha256:a13ce9b419fe9f277c63f700efb0e444331509d1881b5610d2ba7e9080606967",
+                "sha256:a19ef0952b9d2803df88dff07f45a6c92d5676afb9b8d69cf32232d684036d11",
+                "sha256:ad766ca8b8c1419b71a22756b45264f45725c86133dc80a7cbe30b6b78c75620",
+                "sha256:ad7963f261988ee0883816b6b9f206f11461c9b3cb5cfbca0c9ab5adc406d395",
+                "sha256:c16201060c5a3f8742e3deae759014251ac92f382f82bc2a41dc079ff18c3f24",
+                "sha256:c43b202f65891861a9a336984a103de25de235f756de69e32db893156f767013",
+                "sha256:c675c6cce4295cb1a692f3de7416aacace7314e064b94bc86e93aceefce7fd3e",
+                "sha256:d17cec0b992b1434f5f9df9986563605a4d1b1acd5574c87fc2ac014bcbd3316",
+                "sha256:dc91f6129953861a73d9a65c52a8dd682b561a9ebaf65283541645cab6489917",
+                "sha256:e2f4cbd1760d2bf2f30e396c2301999aab0191aec031a6a8a04950b2f575a536",
+                "sha256:f192e6d3556714105c10486bbd6d045e38a0c04d9da3cef21e0a8dfd8e162df4",
+                "sha256:f775b07026af2b1b0b5a8b05e41571cdcf3a315a67df265d60af301656a5425b",
+                "sha256:f969ec7f56ba9636679e69ca07fba548312ccaca37412ee823c7f413541ad7e0",
+                "sha256:f9dc52cd70907aafb99a773b66b156f2f995c7a0d284397c487c8b71ddbef2f9",
+                "sha256:fc7212e36ebeb81aebf7949c92897b622490d7c0e333a479c0395591e7994600"
+            ],
+            "index": "pypi",
+            "version": "==1.0.7"
+        },
         "certifi": {
             "hashes": [
                 "sha256:47f9c83ef4c0c621eaef743f133f09fa8a74a9b75f037e8624f83bd1b6626cb7",
                 "sha256:993f830721089fef441cdfeb4b2c8c9df86f0c63239f06bd025a76a7daddb033"
             ],
+            "index": "pypi",
             "version": "==2018.11.29"
         },
         "chardet": {
@@ -61,6 +101,7 @@
                 "sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae",
                 "sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691"
             ],
+            "index": "pypi",
             "version": "==3.0.4"
         },
         "coverage": {
@@ -97,6 +138,7 @@
                 "sha256:ed02c7539705696ecb7dc9d476d861f3904a8d2b7e894bd418994920935d36bb",
                 "sha256:ee5b8abc35b549012e03a7b1e86c09491457dba6c94112a2482b18589cc2bdb9"
             ],
+            "index": "pypi",
             "version": "==4.5.2"
         },
         "coveralls": {
@@ -174,6 +216,7 @@
             "hashes": [
                 "sha256:49b3a825280bd66b3aa83585ef59c4a8c82f2c8a522dbe754a8bc8d08c85c491"
             ],
+            "index": "pypi",
             "version": "==0.6.2"
         },
         "docutils": {
@@ -182,6 +225,7 @@
                 "sha256:51e64ef2ebfb29cae1faa133b3710143496eca21c530f3f71424d77687764274",
                 "sha256:7a4bd47eaf6596e1295ecb11361139febe29b084a87bf005bf899f9a42edc3c6"
             ],
+            "index": "pypi",
             "version": "==0.14"
         },
         "execnet": {
@@ -189,6 +233,7 @@
                 "sha256:a7a84d5fa07a089186a329528f127c9d73b9de57f1a1131b82bb5320ee651f6a",
                 "sha256:fc155a6b553c66c838d1a22dba1dc9f5f505c43285a878c6f74a79c024750b83"
             ],
+            "index": "pypi",
             "version": "==1.5.0"
         },
         "factory-boy": {
@@ -204,6 +249,7 @@
                 "sha256:16342dca4d92bfc83bab6a7daf6650e0ab087605a66bc38f17523fdb01757910",
                 "sha256:d871ea315b2dcba9138b8344f2c131a76ac62d6227ca39f69b0c889fec97376c"
             ],
+            "index": "pypi",
             "version": "==1.0.2"
         },
         "filelock": {
@@ -211,6 +257,7 @@
                 "sha256:b8d5ca5ca1c815e1574aee746650ea7301de63d87935b3463d26368b76e31633",
                 "sha256:d610c1bb404daf85976d7a82eb2ada120f04671007266b708606565dd03b5be6"
             ],
+            "index": "pypi",
             "version": "==3.0.10"
         },
         "filemagic": {
@@ -244,6 +291,7 @@
                 "sha256:c357b3f628cf53ae2c4c05627ecc484553142ca23264e593d327bcde5e9c3407",
                 "sha256:ea8b7f6188e6fa117537c3df7da9fc686d485087abf6ac197f9c46432f7e4a3c"
             ],
+            "index": "pypi",
             "version": "==2.8"
         },
         "imagesize": {
@@ -251,6 +299,7 @@
                 "sha256:3f349de3eb99145973fefb7dbe38554414e5c30abd0c8e4b970a7c9d09f3a1d8",
                 "sha256:f3832918bc3c66617f92e35f5d70729187676313caa60c187eb0f28b8fe5e3b5"
             ],
+            "index": "pypi",
             "version": "==1.1.0"
         },
         "inotify-simple": {
@@ -265,6 +314,7 @@
                 "sha256:74c935a1b8bb9a3947c50a54766a969d4846290e1e788ea44c1392163723c3bd",
                 "sha256:f84be1bb0040caca4cea721fcbbbbd61f9be9464ca236387158b0feea01914a4"
             ],
+            "index": "pypi",
             "version": "==2.10"
         },
         "langdetect": {
@@ -305,6 +355,7 @@
                 "sha256:f82e347a72f955b7017a39708a3667f106e6ad4d10b25f237396a7115d8ed5fd",
                 "sha256:fb7c206e01ad85ce57feeaaa0bf784b97fa3cad0d4a5737bc5295785f5c613a1"
             ],
+            "index": "pypi",
             "version": "==1.1.0"
         },
         "more-itertools": {
@@ -313,6 +364,7 @@
                 "sha256:c0a5785b1109a6bd7fac76d6837fd1feca158e54e521ccd2ae8bfe393cc9d4fc",
                 "sha256:fe7a7cae1ccb57d33952113ff4fa1bc5f879963600ed74918f1236e212ee50b9"
             ],
+            "index": "pypi",
             "version": "==5.0.0"
         },
         "packaging": {
@@ -370,6 +422,7 @@
                 "sha256:8ddc32f03971bfdf900a81961a48ccf2fb677cf7715108f85295c67405798616",
                 "sha256:980710797ff6a041e9a73a5787804f848996ecaa6f8a1b1e08224a5894f2074a"
             ],
+            "index": "pypi",
             "version": "==0.8.1"
         },
         "ply": {
@@ -377,6 +430,7 @@
                 "sha256:00c7c1aaa88358b9c765b6d3000c6eec0ba42abca5351b095321aef446081da3",
                 "sha256:096f9b8350b65ebd2fd1346b12452efe5b9607f7482813ffca50c22722a807ce"
             ],
+            "index": "pypi",
             "version": "==3.11"
         },
         "psycopg2": {
@@ -420,6 +474,7 @@
                 "sha256:bf92637198836372b520efcba9e020c330123be8ce527e535d185ed4b6f45694",
                 "sha256:e76826342cefe3c3d5f7e8ee4316b80d1dd8a300781612ddbc765c17ba25a6c6"
             ],
+            "index": "pypi",
             "version": "==1.7.0"
         },
         "pycodestyle": {
@@ -435,6 +490,7 @@
                 "sha256:5ffada19f6203563680669ee7f53b64dabbeb100eb51b61996085e99c03b284a",
                 "sha256:e8218dd399a61674745138520d0d4cf2621d7e032439341bc3f647bff125818d"
             ],
+            "index": "pypi",
             "version": "==2.3.1"
         },
         "pyocr": {
@@ -449,6 +505,7 @@
                 "sha256:66c9268862641abcac4a96ba74506e594c884e3f57690a696d21ad8210ed667a",
                 "sha256:f6c5ef0d7480ad048c054c37632c67fca55299990fff127850181659eea33fc3"
             ],
+            "index": "pypi",
             "version": "==2.3.1"
         },
         "pytest": {
@@ -487,6 +544,7 @@
                 "sha256:260d03fbd38d5ce41a657759e8d19bc7c8cfa6d0dcfa36c0bc9742d33bc30742",
                 "sha256:8d05c2e6f33cd4422571b2b1bb309720c398b0549cff499e3e4cde661875ab54"
             ],
+            "index": "pypi",
             "version": "==1.0.1"
         },
         "pytest-sugar": {
@@ -533,6 +591,7 @@
             "hashes": [
                 "sha256:033a11de5e3d19ea25c9302d11224e1a1898fe5abd23c61c7c360c25195e3eb1"
             ],
+            "index": "pypi",
             "version": "==0.12.0"
         },
         "pytz": {
@@ -555,6 +614,7 @@
                 "sha256:e06eac198d9c76bcbe52b987b74ead0d353cfaa9f3d8cd907ec984f4bb20ea1e",
                 "sha256:eee007ee39a02cb631b74f89f992766b9d7e952a750166f3e5a5baf8c328c070"
             ],
+            "index": "pypi",
             "version": "==2019.1.24"
         },
         "requests": {
@@ -562,6 +622,7 @@
                 "sha256:502a824f31acdacb3a35b6690b5fbf0bc41d63a24a45c4004352b0242707598e",
                 "sha256:7bf2a778576d825600030a110f3c0e3e8edc51dfaafe1c146e39a2027784957b"
             ],
+            "index": "pypi",
             "version": "==2.21.0"
         },
         "six": {
@@ -569,6 +630,7 @@
                 "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
                 "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
             ],
+            "index": "pypi",
             "version": "==1.12.0"
         },
         "snowballstemmer": {
@@ -576,6 +638,7 @@
                 "sha256:919f26a68b2c17a7634da993d91339e288964f93c274f1343e3bbbe2096e1128",
                 "sha256:9f3bcd3c401c3e862ec0ebe6d2c069ebc012ce142cce209c098ccb5b09136e89"
             ],
+            "index": "pypi",
             "version": "==1.2.1"
         },
         "sphinx": {
@@ -591,12 +654,14 @@
                 "sha256:68ca7ff70785cbe1e7bccc71a48b5b6d965d79ca50629606c7861a21b206d9dd",
                 "sha256:9de47f375baf1ea07cdb3436ff39d7a9c76042c10a769c52353ec46e4e8fc3b9"
             ],
+            "index": "pypi",
             "version": "==1.1.0"
         },
         "termcolor": {
             "hashes": [
                 "sha256:1d6d69ce66211143803fbc56652b41d73b4a400a2891d7bf7a1cdf4c02de613b"
             ],
+            "index": "pypi",
             "version": "==1.1.0"
         },
         "text-unidecode": {
@@ -604,6 +669,7 @@
                 "sha256:5a1375bb2ba7968740508ae38d92e1f889a0832913cb1c447d5e2046061a396d",
                 "sha256:801e38bd550b943563660a91de8d4b6fa5df60a542be9093f7abf819f86050cc"
             ],
+            "index": "pypi",
             "version": "==1.2"
         },
         "toml": {
@@ -611,6 +677,7 @@
                 "sha256:229f81c57791a41d65e399fc06bf0848bab550a9dfd5ed66df18ce5f05e73d5c",
                 "sha256:235682dd292d5899d361a811df37e04a8828a5b1da3115886b73cf81ebc9100e"
             ],
+            "index": "pypi",
             "version": "==0.10.0"
         },
         "tox": {
@@ -625,6 +692,7 @@
             "hashes": [
                 "sha256:4ebeb848845ac898da6519b9b31879cf13b6626f7184c496037b818e238f2c4e"
             ],
+            "index": "pypi",
             "version": "==1.5.1"
         },
         "urllib3": {
@@ -632,6 +700,7 @@
                 "sha256:61bf29cada3fc2fbefad4fdf059ea4bd1b4a86d2b6d15e1c7c0b582b9752fe39",
                 "sha256:de9529817c93f27c8ccbfead6985011db27bd0ddfcdb2d86f3f663385c6a9c22"
             ],
+            "index": "pypi",
             "version": "==1.24.1"
         },
         "virtualenv": {
@@ -639,7 +708,16 @@
                 "sha256:58c359370401e0af817fb0070911e599c5fdc836166306b04fd0f278151ed125",
                 "sha256:729f0bcab430e4ef137646805b5b1d8efbb43fe53d4a0f33328624a84a5121f7"
             ],
+            "index": "pypi",
             "version": "==16.3.0"
+        },
+        "whitenoise": {
+            "hashes": [
+                "sha256:59d880d25d0e90bcc6554fe0504a11195bd2e59b3d690b6fb42a8040d4e67ef5",
+                "sha256:c9b7c47fdc1dba4d37bf2787a01a844dc7a521e174fcd22a2d429e0be65e1782"
+            ],
+            "index": "pypi",
+            "version": "==4.1.3"
         }
     },
     "develop": {
@@ -652,18 +730,18 @@
         },
         "decorator": {
             "hashes": [
-                "sha256:33cd704aea07b4c28b3eb2c97d288a06918275dac0ecebdaf1bc8a48d98adb9e",
-                "sha256:cabb249f4710888a2fc0e13e9a16c343d932033718ff62e1e9bc93a9d3a9122b"
+                "sha256:86156361c50488b84a3f148056ea716ca587df2f0de1d34750d35c21312725de",
+                "sha256:f069f3a01830ca754ba5258fde2278454a0b5b79e0d7f5c13b3b97e57d4acff6"
             ],
-            "version": "==4.3.2"
+            "version": "==4.4.0"
         },
         "ipython": {
             "hashes": [
-                "sha256:6a9496209b76463f1dec126ab928919aaf1f55b38beb9219af3fe202f6bbdd12",
-                "sha256:f69932b1e806b38a7818d9a1e918e5821b685715040b48e59c657b3c7961b742"
+                "sha256:11067ab11d98b1e6c7f0993506f7a5f8a91af420f7e82be6575fcb7a6ca372a0",
+                "sha256:60bc55c2c1d287161191cc2469e73c116d9b634cff25fe214a43cba7cec94c79"
             ],
             "index": "pypi",
-            "version": "==7.2.0"
+            "version": "==7.6.1"
         },
         "ipython-genutils": {
             "hashes": [
@@ -674,25 +752,25 @@
         },
         "jedi": {
             "hashes": [
-                "sha256:571702b5bd167911fe9036e5039ba67f820d6502832285cde8c881ab2b2149fd",
-                "sha256:c8481b5e59d34a5c7c42e98f6625e633f6ef59353abea6437472c7ec2093f191"
+                "sha256:53c850f1a7d3cfcd306cc513e2450a54bdf5cacd7604b74e42dd1f0758eaaf36",
+                "sha256:e07457174ef7cb2342ff94fa56484fe41cec7ef69b0059f01d3f812379cb6f7c"
             ],
-            "version": "==0.13.2"
+            "version": "==0.14.1"
         },
         "parso": {
             "hashes": [
-                "sha256:4b8f9ed80c3a4a3191aa3261505d868aa552dd25649cb13a7d73b6b7315edf2d",
-                "sha256:5a120be2e8863993b597f1c0437efca799e90e0793c98ae5d4e34ebd00140e31"
+                "sha256:63854233e1fadb5da97f2744b6b24346d2750b85965e7e399bec1620232797dc",
+                "sha256:666b0ee4a7a1220f65d367617f2cd3ffddff3e205f3f16a0284df30e774c2a9c"
             ],
-            "version": "==0.3.2"
+            "version": "==0.5.1"
         },
         "pexpect": {
             "hashes": [
-                "sha256:2a8e88259839571d1251d278476f3eec5db26deb73a70be5ed5dc5435e418aba",
-                "sha256:3fbd41d4caf27fa4a377bfd16fef87271099463e6fa73e92a52f92dfee5d425b"
+                "sha256:2094eefdfcf37a1fdbfb9aa090862c1a4878e5c7e0e7e7088bdb511c558e5cd1",
+                "sha256:9e2c1fd0e6ee3a49b28f95d4b33bc389c89b20af6a1255906e90ff1262ce62eb"
             ],
             "markers": "sys_platform != 'win32'",
-            "version": "==4.6.0"
+            "version": "==4.7.0"
         },
         "pickleshare": {
             "hashes": [
@@ -703,11 +781,11 @@
         },
         "prompt-toolkit": {
             "hashes": [
-                "sha256:c1d6aff5252ab2ef391c2fe498ed8c088066f66bc64a8d5c095bbf795d9fec34",
-                "sha256:d4c47f79b635a0e70b84fdb97ebd9a274203706b1ee5ed44c10da62755cf3ec9",
-                "sha256:fd17048d8335c1e6d5ee403c3569953ba3eb8555d710bfc548faf0712666ea39"
+                "sha256:11adf3389a996a6d45cc277580d0d53e8a5afd281d0c9ec71b28e6f121463780",
+                "sha256:2519ad1d8038fd5fc8e770362237ad0364d16a7650fb5724af6997ed5515e3c1",
+                "sha256:977c6583ae813a37dc1c2e1b715892461fcbdaa57f6fc62f33a528c4886c8f55"
             ],
-            "version": "==2.0.7"
+            "version": "==2.0.9"
         },
         "ptyprocess": {
             "hashes": [
@@ -721,6 +799,7 @@
                 "sha256:5ffada19f6203563680669ee7f53b64dabbeb100eb51b61996085e99c03b284a",
                 "sha256:e8218dd399a61674745138520d0d4cf2621d7e032439341bc3f647bff125818d"
             ],
+            "index": "pypi",
             "version": "==2.3.1"
         },
         "six": {
@@ -728,6 +807,7 @@
                 "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
                 "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
             ],
+            "index": "pypi",
             "version": "==1.12.0"
         },
         "traitlets": {
diff --git a/requirements.txt b/requirements.txt
index 0885215c4..a643a88cf 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,7 @@ apipkg==1.5
 atomicwrites==1.2.1
 attrs==18.2.0
 babel==2.6.0
+brotli==1.0.7
 certifi==2018.11.29
 chardet==3.0.4
 coverage==4.5.2
@@ -68,3 +69,4 @@ tox==3.7.0
 tzlocal==1.5.1
 urllib3==1.24.1
 virtualenv==16.3.0
+whitenoise==4.1.3