Added partial handlebars templ
Moved the preview/publish buttons to partial .hbs

These buttons are now present and functional on editing the menu or page.
The beginning stages of the extensions UI

Work in progress
Merge branch 'develop' into enable-extensions
Slightly Updated README
Added more user friendly instructions.
Initial extension API structure

End point for removing extension elements from content.
On-going work to 'Manage extensions' UI

Awaiting API end-points
Change endpoint URL

Stubbed version to allow front end dev to continue
FFMpeg validation
Asks the user if they have FFMpeg and gives them a link to download it. Automatically sets it to the right value in config.
Refactor functions
Removed unneeded variable
Fixes issue with hard 401 on incorrect login

Now triggering and handling Origin login:failed event to display a more
user friendly message.
Added enable end point
Merge branch 'extension-api' of github.com:adaptlearning/adapt_authoring into enable-extensions
Integration with extension APIs

(Work in progress)
Fixed issue with extension _id not being passed

The API was not being sent the correct _id value.
Implementation of extension enable/disable
Finished linking API to 'Manage extensions' screen
Fixed case error on extensionCollection.js
fixed casing in a couple of paths