Merge release from 2014-03-10

Conflicts:
	cms/envs/common.py
	lms/envs/common.py

Cale/fix crazy items error

Save language preference on account creation

This is necessary to allow non-browser-based services (e.g. notifier)
to know a user's preferred language even if the user has not explicitly
selected one.

Put language modal in alphabetical order LMS-2302

Without this, the new 'items' field in the course_info xmodule caused
bizarre behavior. If you added the text 'items' to a course_info
section, then the LMS would throw a 500, because the field name isn't
'data', but the stored data is a string, leading to the check of
`key.field_name in self._data`, where key.field_name is the string 'items',
and self._data is the content string.

fix capa textline display to leave "inline" alone upon status change

fix capa textline to properly use inline if specified when using math preprocessor

Update translations (autogenerated message)

Update dummy Esperanto strings

Fix video resizing in Flash mode.

Refactor of permissions checking for wiki pages.

LMS-2136

Currently wiki_slug is set to course number. However, since multiple
courses can have the same number this may lead to clashes. So wiki_slug
will be set to org.course.name. To maintain the active wiki_slugs for
xml courses this cannot be changed in the CourseDescriptor.

LMS-2136

CourseRole names have a new format (type_org.number.run). Previously
when checking if a user was staff for a course wiki type_org/number/run
and type_number format role names were checked by parsing user group names.

This logic has been refactored to first fetch all courses which use the
particular wiki_slug and then use courseware.access.has_access to check if the
user has staff permissions on any of the courses.

LMS-2136

This method returns a list of courses which use the particular wiki_slug. It is used for
checking permissions in the course_wiki app.

LMS-2136

LMS-2136

Minor changes to instructor Analytics tab

Fix some simple pep8 and pylint violations

Release Hotfix-03-06-2014

Minor changes to instructor Analytics tab

Conflicts:
	cms/envs/common.py
	lms/envs/common.py

Add auth module

Cale/fix crazy items error

Add .txt and .srt options to the "download transcript" button [BLD-844]