Keyguard: Do not show maximized on simpin.

* Show a maximzed widget container on first boot when simpin
  or puk is requested does not make any sense. In this case
  show it as normal view
* A bit codecleanup and centralize
* Fix animation was visible on screnn turn on. Now it is directly
  maximized visible

PS2/3: Whitespaces.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Change-Id: Ied8fe65b6a5cbd019bfc76f72b8d52a5bd8d3a46