Remove specific versions from Pipfile and adjust Pipfile.lock and requirements.txt accordingly

Pipfile

@@ -4,6 +4,8 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
+django = "<2.1,>=2.0"
+pillow = "*"
 coveralls = "*"
 dateparser = "*"
 django-cors-headers = "*"
@@ -13,8 +15,9 @@ django-filter = "*"
 djangorestframework = "*"
 factory-boy = "*"
 filemagic = "*"
-fuzzywuzzy = {extras = ["speedup"], version = "==0.15.0"}
+fuzzywuzzy = {extras = ["speedup"],version = "==0.15.0"}
 gunicorn = "*"
+inotify-simple = "*"
 langdetect = "*"
 pdftotext = "*"
 pyocr = "*"
@@ -22,6 +25,7 @@ python-dateutil = "*"
 python-dotenv = "*"
 python-gnupg = "*"
 pytz = "*"
+sphinx = "*"
 tox = "*"
 pycodestyle = "*"
 pytest = "*"
@@ -33,47 +37,7 @@ pytest-xdist = "*"
 psycopg2 = "*"
 djangoql = "*"
 whitenoise = "*"
-alabaster = "*"
-apipkg = "*"
-atomicwrites = "*"
-attrs = "*"
-certifi = "*"
-chardet = "*"
-coverage = "*"
-docopt = "*"
-docutils = "*"
-execnet = "*"
-filelock = "*"
-idna = "*"
-imagesize = "*"
-more-itertools = "*"
-pluggy = "*"
-ply = "*"
-py = "*"
-pyparsing = "*"
-pytest-forked = "*"
-regex = "*"
-requests = "*"
-six = "*"
-snowballstemmer = "*"
-sphinxcontrib-websupport = "*"
-termcolor = "*"
-text-unidecode = "*"
-toml = "*"
-tzlocal = "*"
-urllib3 = "*"
-virtualenv = "*"
-Django = "<2.1,>=2.0"
-Pillow = "*"
-inotify_simple = "*"
-Sphinx = "*"
-Brotli = "*"
-Babel = "*"
-Faker = "*"
-Jinja2 = "*"
-MarkupSafe = "*"
-Pygments = "*"
-python-Levenshtein = "*"
+brotli = "*"
 
 [dev-packages]
 ipython = "*"