Quiet down exceptions at startup, and during tests

Word-wrap CHANGELOG.

small unicode fix in instr dash

Re-enable verify student identity acceptance tests

Fix parentheses so that we only pull the course modes we want.

Increased timeout in LaTeX acceptance test.

Catch WebDriver exceptions when creating selenium browser

Merge pull request #1204 from edx/jmclaus_bugfix_video_player_controls_a...

Bug fix video player controls a11y

Add AUTOMATIC_VERIFY_STUDENT_IDENTITY_FOR_TESTING flag so that acceptance tests can run through certificate identity verification flow.

Re-enable the component acceptance tests

Bug fix video player controls a11y

Fix publishing in old mongo

Studio: HTML body class and view-styling naming conventions

when draft is deleted and then parent published.
ensure moving doesn't cause deletion

BLD-388: Fix acceptance tests.

First pass at ARIA. Video player buttons announce themselves as button when used with a screen reader

Refactor upload tests and add locked asset tests for registered user

There's no need to display a traceback for every failed content load,
the comment before the log line even says so.

The exceptions shown before tests are run are because of the eager
initialization of the modulestores.  They don't need to be initialized
then, that just speeds the responsiveness of servers.  Putting off the
initialization means they get inited as needed, and the log lines get