I have released a new bundle for Roundcube v0.5.2
calendar plugin
CalDAV backend has been improved.
Notice:
(*) If never used before, create 'events_caldav' database table and add to 'events' and 'events_cache' table field 'caldav' type 'text'.
(*) If database 'events_caldav' table already exists, add field 'caldav' type 'text'. Adjust 'events' and 'events_cache' table as mentioned above aswell.
(*) Update jqueryui plugin.
Known issues:
(*) Google has implemented categories recently. Their CalDAV backend does not support it yet. So, sync event colors is not possible yet.
(*) The reminder section has not been refactored yet. Reminder properties will be overwritten on a per user level. So, if you have setup reminders on a per event level in goolge calendar, you will loose these settings.
Still use with care. Regard it as a beta now.