Update featured texts/ sheets
Decorate all API views with @catch_error
Further work with layers
Ensure category names don't collide with title variants
Allow selecting notification / message text
Sort sources filter by count
Sepearate Notes from Commentary; remove unused type filter code
Splash page for new profile contest, blurb on homepage
Sheets panel in sidebar
Hebrew blurb for profile contest
Fix note title bug in editing
Merge branch 'master' into sidebar
Separate oblique commentary
Fix heOnly status on quoting commentary
Merge remote-tracking branch 'origin/master' into refactor

Conflicts:
	reader/views.py
	sefaria/texts.py
	sefaria/utils/util.py
undoing part of funky merge.  Move to Layer init to new model.
Demo of packaging paradigms - (breaks code, currently)
Move delete_template_cache to system
model package importing
Still working out the funky merge