Limit the page and chapter numbers to digits, to keep malicious URL
components from being inserted onto the page.

Conflicts:
	lms/urls.py

Fixed bug when user votes w/o permission - now displays a friendly error message instead of failing.

Fixed bug when hinter module displays a hint, then is asked to display nothing.  (Used to not update in this case.)

Fixed various commenting things.

Removed an unused function in the crowdsourced module coffeescript.

Improved commenting in hint_manager.

Fixed pep and pylint violations.

Edited text of crowdsourced hinter template to Piotr's suggestions.  Added some HTML formatting to same.

Expanded test coverage a little.

Expanded tests of hint_manager.

Enabled the hint_manager by default in development environments.

Fixed broken tests.  Made the hint manager enabled in testing environments - this lets us test the hint manager.

Began enforcing one-vote-per-person.  This can be disabled with debug="True" in the <crowdsource_hinter> tag.

Started tests of the hint manager.

Chiseled a little at writing template tests.

Hinter now displays vote count after voting.

Began testing templates.

Fixed some bugs in the tests for crowdsourced hinter.

Made tests of the crowdsource hinter module more standardized and easier to read.  Fixed database non-initialization bug in crowdsource hinter module.

Finished prototype of hint moderation view.  Began re-writing tests of the crowdsource hinter module.  (Old tests no longer cover all the code, now that moderation has been added.)

Added moderation feature - you can now choose to hold all hints for moderator approval before showing.

Conflicts:
	common/static/coffee/src/logger.coffee

Peter fogg/fix default videos

Previously XML data wasn't parsed in VideoDescriptor.__init__, leading
to the defaults being used for video settings.

Add handful of events to the Segment.io whitelist

Greater dir naming flexibility.

New course creator group.

Fix LMS-500: Random class in random module was None

Moves user activation from just clicking on reset password to following the link in the password reset email

Specify a different xcontent mongo db for the acceptance tests

Don't mention edge in the subject line; use same message for edx and edg...

Cleanup before adding external grader

Fixed Jasmine tests in light of Logger changes, and wrote test to cover case where data passed is not a dictionary