SystemUI: more compatibility with themes

Change-Id: I21d0db2e8ae0530d0f8d179dfe914dd3aa665949
Signed-off-by: Roman Birg <romanbirg@gmail.com>
Lockscreen: fix hiding of initial page hints for landscape

Change-Id: Ied7a1a0401b7dae9d1900202a51eda34552b4f63
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>
Lockscreen: add missing import to fix building

Change-Id: I5aef2d22f3ea9dfb1b7639fc1b086bfcfc8099ff
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>