SystemUI: Status bar UI cleanup for MSIM and roaming

Change-Id: Id0a94962ff062daeba1988ccf799ca1f8c3e2e1d
(cherry picked from commit 666f3da6a5e59342dcebf515bf8618c2dc4ff843)
Keyguard: Change SUB label to SIM

Change-Id: I9e96b42bd072e114c453c1b031776bd66425228d
(cherry picked from commit d1bca64347d0933ad6f7e7feedcbb613198c1155)
Move UICC storage string to cm_strings

Change-Id: If7837bbd28663080713e2014c7a1c858cdb40c7e
(cherry picked from commit d0389b826f9691ffe79c370cc67951eb2738d648)