i18n fixes for wiki templates.
Tests should explicitly ask for English.
Use the latest django-wiki revision.
Keyboard events and ARIA markup added to speed control. Replaced anonymous event handlers by named functions. Menu stays open on mouseleave when a speed entry has focus. In that case, the menu can be closed by clicking anywhere outside of it. [BLD-402, BLD-363]
Don't internationalize strings we use for enrollment.

LMS-2218
fix partial work done for changes in django-debug-toolbar-1.0.1

add trailing comma, restore uncommented state of Mongo panel
update version for django debug toolbar
Do not translate checkbox values
Merge pull request #2545 from edx/ned/remove-tabs

Remove tabs.
Merge pull request #2356 from edx/dhm/mixed_ms_wrapper

MixedModulestore wraps most getters, update_item, delete_item
Move tests related to views files into views/tests.
Remove unused methods.
pep8 cleanup
Add unit tests to handle duplicate user registration attempts
Merge pull request #2381 from edx/jmclaus/feature_video_speed_control_improved_a11y

Keyboard events and ARIA markup added to speed control
Remove unused imports.
Merge pull request #2544 from edx/diana/drupal-registration-i18n

Don't internationalize strings we use for enrollment.
Merge pull request #2548 from edx/diana/drupal-registration-i18n

Don't internationalize strings we use for enrollment.
Merge pull request #2521 from edx/db/create-account-400

unit tests to handle duplicate user registration attempts
Merge pull request #2488 from edx/ned/i18n-for-wiki

Finish wiki i18n