EDT-630: Allow HTML5 DnD in the editor.
Merge remote-tracking branch 'upstream/release/editor_v1' into EDT-630
Merge remote-tracking branch 'upstream/release/editor_v1' into EDT-630
EDT-664: Support base64 for pasted images
Merge remote-tracking branch 'upstream/release/editor_v1' into EDT-630
Merge remote-tracking branch 'upstream/release/editor_v1' into EDT-630
MT-15586: Support DnD on unsaved pages
Send in cntent type for paste operation
Merge remote-tracking branch 'upstream/release/editor_v1' into EDT-630
Merge remote-tracking branch 'upstream/release/editor_v1' into EDT-630
Merge pull request #121 from aaronmars/EDT-630

EDT-630: Support drag and drop in the editor for images with the new file uploader stuff.