Let the refresh button spin

[Makman2]

The WiFi refresh menu action button shall spin until the refreshed view is shown.

This is a bit complicated since the SDK has problems with AppCompat and uses a dumb system regarding drawable rotations. Just complicated and not helpful at all.

So best way:

• Write our own RotateDrawable, where you can just set the angle (and not some awkward "level" that ranges from 0 - 10000)
• If possible embed it in XML
• Use the new drawable as icon
• Use an animator with linear interpolation that sets the angle
  • Maybe make a completely own Animator class that just needs the new RotateDrawable target. But some properties should be left open, like interpolation etc.