Make XBlock client-side runtimes proper classes, so that handlerUrl can
be defined in a per-runtime way, and we can have multiple runtimes on a
single page.

[LMS-1630][LMS-1421][LMS-1517]

Removed extraneous title block that was replacing the breadcrumbs

Removed LANGUAGE from devstack settings

fixing layout/style of disabled register button

Add documentation for "multiple choice and numerical input" problems

Conflicts:
	common/lib/xmodule/xmodule/modulestore/xml.py

Took the changes that were on the release branch.

Allow new response pagination parameters to pass through thread model.

Add OG title and description to course about pages

Clean up strings in the ErrorModule

Pass component display name to Mako template

Add initial languages, ready for dark-launch

Fix find courses page title in bok choy test suite

JIRA: FOR-374

Mark strings that were causing test failures as unicode

i18n input field on login page (LMS-2159)

Fix unicode error in subsection

Add pagination of responses to forum threads

STUD-1241