update to show cohort name on create and cohort name on view all threads, added cohort dictionary to convert ids to names

Don't run collectstatic on course content

FAQ update for the embargo restriction

adding exporting of tabs and custom_tags. Also added unit tests

Updating FAQ text

pearson_dump: prettify, add missing error, provide default filename

support reordering of static tabs in studio

rename method to something that actually better reflects what it is doing. Also rename a variable to help with readability

rework redorder tabs so that we account for the fact that static tabs can be in any arbitrary order (with respect to non-static tabs) when working with an imported course

Catch save error and throw it in the user's face (bug 147). 

a server error and pull the server error handler into a common function.

Bug fixes for problem progress not updating.

fix copy+paste bug.

add unit test to test DraftModuleStore.get_items() fix

add comment on draft store test which explains test success is just for get_items() not to throw an exception when passed in a course_id

don't hard code the ordering of the tabs in the test. Take the current ordering defintion (in the test data) and reverse it