Fix issue where javascript was disappearing from problem html

Fixed checkbox bug in capa_module

add comments

need to support link references to static content that is in the code ba...

Fix/will/mc checkbox bug

New version of Backbone has separate invalid event.

Disable Django toolbar-- breaking mongo updates.

but the answer is incorrect.

make export a bit more resilient. If there's a piece of metadata that we...

make export a bit more resilient. If there's a piece of metadata that we can't serialize - i.e. someone wrote a new bool attribute and didn't put it in the type mapping table - then we log the exception and continue.

so that: a) checks/x marks appear after each option
for radio buttons, b) checks/x marks appear for the
entire problem (not individual options) for checkbox
buttons.

Also fixed issue with checks appearing on the next line
by changing <text> to display:inline instead of display:block

Fix/will/merge jnater unittests

Hotfix/jkarni/folditscore

Fix max_attempts=''

That's what studio defaults to, and recent changes made it break.
Added a few tests to make sure it doesn't happen again.

remove links to missing image files.  We can add them if needed later.

Added documentation for drag and drop - targets on draggables feature.

add textbook and pdf textbook documentation

Feature/jkarni/genex

Update correctmap to handle partially correct answers, and

fix annotation tests so that they use the new test_system functionality

Enable Django debug toolbar on Studio (including Mongo panel).

Refactor Chemical Equation Preview

Feature/abarrett/annotatable xmodule DO NOT MERGE