v9.2.0

• removed mgd extension support
• updated bundled JS libraries (elFinder, tinyMCE, jqueryUI, fullCalendar, fancytree, jqGrid)
• begin rolling out Doctrine-based performance improvements
• PDF generation for offers
• compatibility improvements for new datamanager
• improved RCS UI & consistency in associated serializers
• groundwork for resource support in o.o.calendar
• improved security with better random generators & encryption
• many, many cleanups, streamlining, fixes & usability improvements