Fix controls management activities details

Some minor fixes:
* Remove icon next to structure name in Add controls
* Remove "other apps" when there's no other app to switch.
* Change footer buttons in apps screen.

Test: manual
Fixes: 154672630
Fixes: 154673161
Fixes: 154631120
Change-Id: I45be5c78b97a0301b77fa11125a294c66903dbef