Editor cut functionality
- Cut added for articles, blocks, components
- Drop zones updated for dragging
Merge pull request #337 from adaptlearning/editor-cut-feature

Editor cut feature
Event order update
Merge pull request #338 from adaptlearning/editor-cut-feature

Event order update
fixes #339 - updates to asset manager

@TODO
 - thumbnails for assets
Merge pull request #340 from adaptlearning/issues/339

Issues/339
Merge branch 'develop' of github.com:adaptlearning/adapt_authoring into create-asset

Conflicts:
	lib/assetmanager.js