Improve user experience for creation of new state views

[Matthias Schoettle]

Currently, when creating a new state view, the user has to tap-and-hold on the background but at first, nothing happens, then all of a sudden a state view appears.

I propose the following improvements:

• Tap-and-hold needs to show the visualization of tap-and-hold to indicate that this gesture is possible
  • Either create the state view directly or show a selector with that option (since it is only one we might just create them)
• Instead of "Enter state view name" it should read "Select specified class(ifier)" (or something similar) and a selector should appear with valid choices (instead of having to type the class name exactly as it is defined)