Remove event "stash", but add event component "stash" again
Introduce "repeat" event component, drop "run_once" events
Add event "on_mapexit" which is triggered upon leaving the map
Add Event "on_leave" which triggers when leaving an area
MapRenderer: Correct warning message for undefined event types
Merge remote-tracking branch 'mainline/master' into events
Merge pull request #633 from stefanbeller/events

Reorganize event types.