Merge changes from topic "flicker-rotation"

* changes:
  New FlickerTests: Run split screen tests at 0 and 90 degrees
  New FlickerTests: Start app warm and cold at both 0 and 90 degrees
  New FlickerTests: Start IME alongside the app (0 and 90 degrees)
  New FlickerTests: Start IME tests with app rotated by 90 degrees