Refactor dependency file

Should now only include dependencies we actually use, not dependencies of dependencies and unused things

requirements.txt

@@ -1,41 +1,23 @@
-beautifulsoup4==4.8.2
-contextlib2==0.6.0.post1
-diff-match-patch==20181111
-dj-database-url==0.5.0
 dj-static==0.0.6
+diff-match-patch==20181111
 Django==3.0.3
-django-filter==2.2.0
-django-widget-tweaks==1.4.5
 django-debug-toolbar==2.2
 django-ical==1.7.0
 django-recaptcha==2.0.6
 django-registration-redux==2.7
 django-reversion==3.0.7
-django-toolbelt==0.0.1
-premailer==3.6.1
-git+git://github.com/jazzband/django-widget-tweaks.git@1.4.2
+django-widget-tweaks==1.4.5
 gunicorn==20.0.4
 icalendar==4.0.4
 lxml==4.5.0
-Markdown==3.2.1
-Pillow==7.0.0
-psycopg2-binary==2.8.4
-Pygments==2.5.2
+premailer==3.6.1
+psycopg2==2.8.4
 PyPDF2==1.26.0
-python-dateutil==2.8.1
+PyPOM==2.2.0
 pytz==2019.3
 raven==6.10.0
-reportlab==3.5.34
+requests==2.23.0
 selenium==3.141.0
 simplejson==3.17.0
-six==1.14.0
-sqlparse==0.3.0
-static3==0.7.0
-svg2rlg==0.3
-yolk==0.4.3
 whitenoise==5.0.1
 z3c.rml==3.9.1
-zope.event==4.4
-zope.interface==4.7.1
-zope.schema==4.9.3
-pypom==2.2.0