** Added ',' into accepted Forge material characters
** Switched to default fonts in vector image and document editors of
Forge because title font is always capitalized
** Fixed a bug in DropboxManager that could cause lots of error messages
into log
** Disabled propertyHandlers on change plugin while editor is not in
fullPage mode
** Added clientId property into MaterialRevision entity
** Implemented clientId in coops so plugin would better survive the
asynchronous requests
** Dropped unused language and title properties from MaterialRevision