CORE-4671:
* More corrections to side error issue.
CORE-4671: Added KLUDGE annotations 
This is to track the changes related to this ticket, as they will have
to be revisited when we update GXT.
core-4604 allow meta data editing for files / folders with write
permissions.
CORE-4691 Update for new ImportUrlValidator.

Updated FileUploadByUrlDialog to use the new ImportUrlValidator.
CORE-3950 Enabled sorting and menu for Path column.

Updated the Path column in DiskResourceColumnModel to allowing sorting and its header menu.
CORE-4704 Removed bold from default details text.

Updated DiskResourceViewImpl to not bold the default text in the details panel.