LMS-11380

TNL-392

TNL-284

fix the translation issues

added a check if a user is already registered in a course. Changed the messages

added course depth=0 and removed pep8 violations

only redirect to dashboard if user has course enrollments, otherwise remain on the course catalog page (aka homepage or root)

update lettuce test to match new expected behavior

add Jason's feedback

only apply new redirect logic for microsites

switch to use a feature flag to determine whether to support redirect behavior

To include size warning of 10 MB.  Also updated styling on existing learn more
links

but just use old to get query info.
LMS-11396

as well as draft
LMS-11395

leak out to callers.
Also, use the return from update_item rather than assume
it was just side effecting.
LMS-11361

Fix trivial excesses (2 splits configured & don't fetch courses if there are none)
LMS-11220, LMS-11391, LMS-11390

When user is creating new post and then cancel it
the data remains in the form which appears when we
click on new post again. The state of form should
be reset.

TNL-148

BLD-1221

LMS-11194

 - changed role to 'in' condition

 - fixed comment about get_real_user

 - Adding Tests and Fixing Pep8 Violations

TNL-24

Used by MITx/6.341x

- fixed tinymce editors condition to check only positive numbers

LMS-11141