C interface fixes

removes:
	- in-place editing of actor names
	- role borders

new behaviour:
	- double click on actor always opens the details
	- when a new actor gets created the details open (we might remove this if it turns out to be too annoying)
        - details fade in from the side
        - actors fade out when deleted

new looks:
        - groups
        - drop-in-actor is rectangular now