Seems like the Edit/QA links in LMS are triggered by a ENABLE_LMS_MIGRATION feature flag. So when running as mongo-backed, set that to False

Fix alt text for the login page: LMS-600

Jonahstanley/fix flakey video test

This reverts commit a7de337fe2d218d6cb9c2f175c6ea71f5ddcb6da.

Fix saving notification CSS.

Use $WORKON_HOME consistently for virtualenv.

Some parts of the `create-dev-env/sh` script use `$WORKON_HOME` and
others hardcode `$HOME/.virtualenvs` which means if you **don't** put
your virtualenvs under `$HOME/.virtualenvs`, the script doesn't work at
all.

This commit removes the hardcoding of virtualenv location and
consistently uses `$WORKON_HOME` everywhere.

Rename CMS.Views.Notification.Saving to Mini.

Peter fogg/explicit course settings

Use new feedback notification when changing section release dates.

Fix/cdodge/update localdev setting for unsafe courses

Jonahstanley/refactor unittest courses

Remove use of keyword "delete" in forum coffee code to fix IE8 bug LMS-441

Unskip Acceptance Tests

seems like we need to define COURSES_WITH_UNSAFE_CODE in cms.envs.common.py, although cms.envs.common.py imports lms.envs.common (where this is defined).