Fix multi-user behaviour for system UI settings (1/2)

Change-Id: I0e434b989c16f5871ce56c7e3041ff3c7a436c73
Make navigation bar ready for per-user configuration.

Also clean it up a bit.

Change-Id: Ic10bd161fce53bf30048a0cb927dcf1e2bfa7774
framework: Privacy Guard

 * Introduce a new privacy feature which allows the user to run an
   application with reduced visibility into his or her personal data.
 * Adds a per-application flag and simple API to determine if this flag
   is enabled for the current or calling process.
 * This flag can be used by content providers to decide if they should
   return a limited/empty dataset.

Change-Id: Id7c54d728e63acb2b02a2a9322930b54949f6c5d
Profiles: Fix turning bluetooth on/off when its in intermediate state

Change-Id: I09213c987580f47a6c3618edb469edabda96230c
Merge "Profiles: Fix turning bluetooth on/off when its in intermediate state" into cm-10.1
Merge "Fix multi-user behaviour for system UI settings (1/2)" into cm-10.1
Merge "Make navigation bar ready for per-user configuration." into cm-10.1
Add missing @hide annotations for Privacy Guard

Change-Id: I6072ed2d3ac05382f9cabbada0c42cea6cbe2422
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1