Merge remote-tracking branch 'refs/remotes/origin/fix-for-Extensible-config.js'
Merge remote-tracking branch 'refs/remotes/origin/bug-language-strings-for-recurrence-widget-dont-load-in-dynamic-mode'
Merge remote-tracking branch 'refs/remotes/origin/extensible-feature-agenda-view3'
Merge remote-tracking branch 'refs/remotes/origin/bug-event-window-close-handling'
Merge remote-tracking branch 'refs/remotes/origin/fix-error-handling-after-drag-and-drop-copy'
Merge remote-tracking branch 'refs/remotes/origin/teamup-override-1-daterange-formatting'
Merge remote-tracking branch 'refs/remotes/origin/teamup-override5-enable-context-menu-for-readonly-calendars'
Merge remote-tracking branch 'refs/remotes/origin/teamup-override6-mobile-optimization'
Merge remote-tracking branch 'refs/remotes/origin/teamup-override-8-make-all-day-events-default'
Merge remote-tracking branch 'refs/remotes/origin/teamup-override-9-make-extensible-debugable'
Merge remote-tracking branch 'refs/remotes/origin/fix-error-handling-after-drag-and-drop-copy'
Various enhancements to data model for events and calendars.