Refactor heartbeat to delegate to the modulestores and sql
LMS-2801
Speed up test by fixing negative assertion
Speed up test for closed caption state
Revise course mode choose page.

LMS-2796
Merge pull request #4108 from edx/diana/update-choose-form

Revise course mode choose page.
bugfix: avoid side-effects when overriding User.default_retrieve_params
Merge pull request #4118 from edx/jsa/bugfix-cc-user

bugfix: avoid side-effects when overriding User.default_retrieve_params
courseware/views.py index function position value integer error correction and test

LMS-2844
fixup! Fix i18n translation issues
Fix seek log.
fix reply/return to annotation links
STUD-1629
Reduce captions wait time.
Improve certificates test time
Merge pull request #4106 from edx/anton/fix-seek-log

Video: fix seek tracking log.
Merge pull request #3898 from edx/zub/bugfix/std1629-annotationtool

fix reply/return to annotation links
Remove deprecated Jenkins script paths.

These now exist under scripts/
Added manual refund page for support.
PR-615
Merge pull request #3908 from edx/dcs/support-dashboard

Added manual refund page for support.
PR-615
Merge pull request #4078 from edx/dhm/heartbeat

Refactor heartbeat to delegate to the modulestores and sql
Merge pull request #4115 from edx/zoldak/fix-test-captions-closed

Speed up test for closed caption state