adding in gray versions of social icons for use in new email template. Using new name to ensure old links and existing emails using older templates still stay active
Move FieldDataCache assert to check both get and get_or_create
adjusted color of russian social network image to be a lighter gray
Add logging to embargo middleware
Add map to problem_check event with descriptions of student answers

The map contains a human readable description of the answer if
necessary. It is useful for problem like multiple choice, when the
response of the student is replaced by a moniker. For example "choice_0"
instead of the full text.

Fixes: AN-587
Update translations (autogenerated message)
Remove assert stmt from i18n validate script
Increases precision of percentages shown in 'Total' bar on the progress page.

The percentages shown currently can be confusing. For example, if the true weight
of a category is 0.76925% and the student scores 100% in it, they will see '0.8%
out of a possible 1.0%'. Increasing the precision to 2 decimal places changes it
to '0.77% of a possible 0.77%'.

LMS-2205
Removed all Push mode information

We should only support Pull mode

stud-1332
Edits from review

stud-1332
Import BrokenPromise
Update translations (autogenerated message)
bug fix for HTML xmodule styling which caused first line of text to be cut off. STUD-1380
Corrected info about angle brackets in labels
Add bok choy tests for forum comment editing