Activate direct editing on create for all activities and events

Feature Request

Always activate direct editing on create. This would simplify quickly sketching new processes with labels.

Excluded gateways from the scope as we don't use label for merging gateways.

Note

Right now, direct editing is only activated for TextAnnotation and Task.

To consider: The external label for gateways / events hides certain context menu controls which may disallow users to continue to model / morph (see screencast below).

Screen Cast with proposed Interaction