adding temporary (hardcoded) direction attributes to main page elements
studio RTL mostly done
adding RTL config file
Studio RTL
final touches on Studio RTL
LMS RTL
LMS RTL - adding right alignment to homepage tiles
fix for Studio RTL on grading scale
fixes for tests
fixes from PR review
Use the language to determine RTL.  en@rtl is a test language.
fixing most component edit tabs for RTL, video still needs to be fixed
adding django bidi language switcher to base templates for lms and studio, and a few extra css fixes
fixes for tests