update install doc to be less fedora-specific
remove custom class view for 500 error page
edit text in 404 and 500 template pages
remove assets tags from base page
rely only on django-compressor now
update requirements.txt (remove django-assets, django-static-precompiler)
update doc to reflect required version for lessc
reference bootstrap variables
(not just custom bootstrap variables)
remove padding in overview page so that nav-tabs on tiny viewports do not wrap