Do not predict runtime before-hand - it is confusing.
UI: Add display_media to the list of required features in a proper way.

Was breaking.
Trigger Refresh event when files are removed from the queue. Close #615.

It is triggered on FilesAdded, ao it is logical to have it for
FilesRemoved as well.
Recover browse_button_hover and browse_button_active functionality.
Merge branch 'master' of github.com:moxiecode/plupload
Update moxiecode/moxie@5d963376ccee90055a523eede1664e3df85b8ffb.