Fix paver python prereq paths
Add ADDL_INSTALLED_APPS to studio for parity with lms
Fix message.
Remove some outdated code.
Updates to problem location for opaque keys
Remove package_id and remove lower_ stuff from migrator
STUD-1603
added and updated pavelib/quality.py from dglance branch, deprecated rake quality tasks
fix for pylint/pep8 defaults
Add the needed wait for ajax statements to checklist acceptance test methods
Opaque-keys: fix pep8 violations
Opaque-keys: fix pylint violations
Annotation Tools: Add helper functions and fixed pep8/pylint errors

Small plugin fixes
Image Annotation Tool: create xmodule and install js files
Image Annotation Tool: Add static images for openseadragon navigation
Image Annotation Tool Fixes
- Added component to view

- Added correct images for OSD

- Fixed path to codemirror

- Tinymce fullscreen works now

- Pep8/Pylint Fixes

- Default image changed and added call to super
Image Annotation Tool: Add linkback functionality to image thumbnails

Changes requested in PR
Adding enrollment upgrade events
Merge pull request #3860 from edx/ahodges/documentation/DOC394

Ahodges/documentation/doc394
Hide beta dash Analytics score distribution widget behind feature flag

ENABLE_INSTRUCTOR_ANALYTICS flag is present to conditionally hide data
dependent on external analytics server installation
Show the menus at the top of the page.