Add whitenoise and brotli as prerequesite for improving performance of static file serving

Additionally, pipenv Pipfile and Pipfile.lock as well as requirements.txt were updated to fullfil requirements of the above packages

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 = "*"