red tabulation - when closing, activate next rather than prev
close non-active unchanged tab
Added logging of cause of xupload_file 404 error
Added logging of cause of xupload_file 404 error and other improvements
move file delete icon in front of link
Merge pull request #5 from dsmall/master

Tabulation, expanded comments, closing background tabs, better logging for xupload_file and moves the file delete icon in front of the file name, thus allowing you to delete files with long names, where the name overlaps the delete icon, plus some other bits