initialize the tabs metadata on course if we go to the edit-tabs page. This will prevent the author from getting into a bad state in the LMS

pin requests to a known version, as we believe there's been an upgrade which is incompatible to our usage

fix crash of custom tags when running against Mongo datastores. Mongo's 'system' does not have a course_id attribute defined, which makes it asymmetric to XmlFilesystem store

just tickle a file to for build cms-master. I dont seem to have the rights to force a jenkins build.

cms pull request 1160 - CSS resolutions

Feature/christina/misc

Overview page allows user to specify grading policy per subsection

add some permissions asserting

pages - made intro text visible again and styled it some

tooltips - removed bad js reference and added in unit tooltips

until we decide the inheritance) 
Remove Policy from subsection editor
Commented out Graded as: _____ from subsection settings 
Fix menu dismissa
Fix ambiguous selection

tooltips - removed duplicate/incorrect tooltip_manager.js reference in base.html and added tooltips to unit actions

Course Info and Settings Editor UI Bug Fixes

Bug fix for Studio #55.

Fixed 2nd fn which had regex infinite loop

the first yesterday. Fixed formatting of compounded video string errors.

parse_videosource but neglected to fix this one.

debugged tooltip latency/vanishing issue

Don't save null about items to db as it chokes lms.

bug - removed placeholdit image references in template HTML

Various Style/UI Tweaks