Removed editor type icon/text from all component sub menus except problem

only cache discussion forum info for 5 minutes before flushing. This is ...

only cache discussion forum info for 5 minutes before flushing. This is needed for Studio backed courses that can add new discussion items at any point in time. Also we need to also set metadata fields (which are basically the same as what gets passed in the XML) as the forums expect those values as metadata

Feature/christina/tiny mce

Feature/christina/tiny mce

disable caching in draft mode stores. It doesn't behave as we expect and...

Change the div being used to create code mirror to a textarea-- just make sure to escape the content! Update tests accordingly.

disable caching in draft mode stores. It doesn't behave as we expect and we need more time to investigate

Escape text being passed to markdown editor, delete copied (and unused) JS code

Fix/cdodge/filesystem xml fixes

Fix bug related to creation of thumbnails for non-image files.

https://edx.lighthouseapp.com/projects/102637-studio/tickets/139-uploads-of-non-images-dont-have-reasonable-icon#ticket-139-2

A couple of bug fixes.

https://edx.lighthouseapp.com/projects/102637-studio/tickets/135-via-tender-studio-asset-locker-currently-returns-incorrect-xml-snippet

#117

Feature/christina/misc

allow for optional 'COURSE_DIR' parameter for the import rake target so that we can import only a single course