dont delete the actor when typing and using the del key, fixes #274
set textarea values immediately after input, fixes #271
fix zIndex stuff in settings menu, fixes #266
show links as links and texts as texts in source field, fixes #141
sanitize y-position on creation, fixes #178
panning does not unselect, fixes #278
Merge branch 'master' into b-various-fixes

Conflicts:
	app/views/templates/presentation/presentation_actor_details.eco
merging
Merge pull request #277 from transparencyint/b-various-fixes

B various fixes