#2863: New, simpler file upload form.
#2863: Remove media embedding tabs, add their content to media browser view.
#2863: Render the new form on the standard media browser and style it accordingly.
#2863: Add menu entries for forms. Print out form or ajax commands depending.
#2863: Replacing old version with new one functions.
#2863: Renaming a duplicate is functional.
#2863: Move common command outside of switch
#2863: Add internet file through ajax now works.
#2863: Aesthetic changes
#2863: Uploading non-duplicate file functions correctly.
#2863: New files can be selected for insertion.
#2863: Fix ajax behavior of newly added items
#2863: Move file to correct location if its not a duplicate.
#2863: Add padding to web add form.;
Merge pull request #3006 from openscholar/2863-media_browser_tabs

Remove the media browser tabs