Revision 3.6.13.3

288 - Unable to undo check-out for '...'. The content item is not
currently checked out. - it is possible that the Signing process moved
swiftly enough that the global cache never caught the content item, in
these cases I need to test for a null or empty table
290 - Cannot update CoSign Role and Signature Tag - added validation to
catch change in these fields and throw alert if necessary
291 - Signature Profile - added blank options to start optionlist