Description:
Some bundlle files are using c/c++ style arguments in messages,
like %s or %1 vs the java bundle way of {0}. There is maybe 100
messages with these kind of args but most use the java way.
(grep the source of Bundle.properties for "%" and will give a list.)

although the uml code is handling this for now, that is, that the arguments
still get shown ok in the message, it would be good
to have for next release it corrected and also that makes it clearer for
those doing localizations. I have let l10n know about this in the how to
localize document.