some more changes

- merged @yvesf commits: a39d4c4e67066297144ad36ebcfddf6263bc6338
- merged @gggard commits: bd803b6400da68ada8b1de152f82b44bb236e595, 87b59de481ffdd322bb966f5a13d817b45c7742d
- create new ics event from android event
- close some cursors
- tags centralized