[1/2] Base: fix ActiveDisplay for WifiOnly Devices

fix http://jira.omnirom.org/browse/OMNI-637
also fix for devices with unsupported Proximity sensor and Light sensor

Change-Id: I346d4ed0ca02c6f8a6da1f3bf1de59ac9179d7b7
[1/2] Base: more improve Active Display

1. fix http://jira.omnirom.org/browse/OMNI-651
2. fix http://jira.omnirom.org/browse/OMNI-641
3. add http://jira.omnirom.org/browse/OMNI-652
4. Add option Double tap to sleep every where
5. Add option to show wallpaper blur behind active display
6. Allow to show numbers of notification on Handle (only show if notification count is enabled in bar settings)
7. minor improvements
8. add battery circle around handle (only show if battery circle around lockscreen handle enabled, see security settings)
9. fix http://jira.omnirom.org/browse/OMNI-665
10. fix whitespace

Change-Id: I1b28041c0245de80b7d09c684f6439b2f8f5bd40
Merge "[1/2] Base: fix ActiveDisplay for WifiOnly Devices" into kk
Merge "[1/2] Base: more improve Active Display" into kk