Preparing API for uploads
Added file-drop directive
Updates file upload banner
Added some base drop target styles
Added quick upload description
Tweaking some styles
More style tweaks
Basic actual uploading
Merge branch 'file-uploads'

* file-uploads:
  Basic actual uploading
  More style tweaks
  Tweaking some styles
  Added quick upload description
  Added some base drop target styles
  Updates file upload banner
  Added file-drop directive
  Preparing API for uploads