Release wakelocks acquired by SyncManager

Release the wakelocks internally acquired by SyncManager to improve
power performance.

Change-Id: I6d9663292cb4471d92ed9132beb7ed1ba2e8128f
CRs-Fixed: 585825
server: Handle broadcast intent and receiver

Ensure the receivers of broadcast intent is not launched before boot
completion by adding an intent flag, since connectivity events can
happen before boot has completed.

Change-Id: Id6fc9e34c89d947d768def38e5c5bb0df54a3a7b
fb: Handle navbar heights correct on dpi changes + more (1/2)

Till now we set the height in px in the settings. Which is a problem
especially on multiDPI roms like we are when the user afterwards changes
the dpi due that it isn't calculated correct anymore on the new dpi.

This commit does
- save the dp value in provider and calculate the real px in fb
- clean up the settings stuff for it + do it a bit nicer (only settings part
  where we do not set the value for the listview)
- as well this commit disables movable navbar for tablets (we may will enable
  it in future but it needs a lot more work to have it on tablets correct working)
- add Converter class for common methods we always use....till now only px->dp
  and dp->px method

Change-Id: I3ddcb993f82758bf2d7a183dcb8023b2fcb8f6c8