ModStatusBar: handle potentially non-existent mDateTimeView
Won't interrupt ModStatusBar initialization
TrafficMeterOmni: added option for auto-hiding on inactivity
Together with inactivity threshold
Recents panel: Clear all in navigation bar / pie
Revised by C3C0:
- squashed all commits into one
- minor changes regarding formatting
- major glitch fixed - details below

When recents key has no actions set (default for both - single and
long-press) and when user is in recents and long-presses the clear all
key, action is taken, recents screen is dismissed but it is immediately
reopened afterwards when user releases the key - this is because in the
meantime recents key was changed back to normal.
Solution: wait until user releases a key before changing it to normal

Revised by bgcngm:
- avoid usage of getIcons method from NavigationBarView class as it was
only implemented on Android 4.3
Clear all recents in navbar: fixed rotation change related issues
When screen is rotated, recents panel and navbar are recreated which
triggers setRecentAll() method. Backup actions are thus replaced with
current CLEAR_ALL actions resulting in unfunctional recents key after
recents panel is dismissed.
Make sure we back up default actions only in case they are not CLEAR_ALL
actions
Implemented Notification LED control
Allows notification LED control on per-app basis.
This is a premium feature.

Cherry-picked and backported from KitKat branch
LedControl: added list search capability
LedControl: added menu for showing all items or active only items
LedControl: categorize settings
LedControl: added notification sounds control settings
LedControl: updated strings
LedControl: added option for Insistent notification
LedControl: separate sounds and vibration settings
LedControl: added settings for vibration control
LedControl: reset value in search edit box on data refresh
Icon Picker: added icons for Chrome and Spotify
Thanks to jacknicholson and Jason_MCG
Updating Russian
Updated Japanese Translation
LedControl: don't show insistent icon when notif. control is disabled
Navigation keys: added option for specifying virtual key vibe pattern
Lockscreen: show pattern error
Option to hide red trail when wrong pattern is entered