SystemUI: Forward port Statusbar Clock and Date actions

Port of http://review.cyanogenmod.org/#/c/27795/4

PS2: Cleanup and address comments
PS3: Remove unused variables

Begin old commit message-----------

Patch set 1-2: Initial port
Patch set 3  : Fixes date click action
Patch set 4  : Remove unused import

Includes:
- Add onClick action to notification clock and date
  In expanded StatusBar
  - clicking clock opens alarms
  - clicking date opens calendar - today selected
  Id: I850732dcca0e65af59ce009aaf9f7ba18bcaf915

- Add onLongClick action to notication clock and date
  - As discussed with ciwrl on google+, LongClick opens DateTimeSettings
  - Moved on-touch color change to superior xml solution, as suggested by
    Andrew Boren <preludedrew@gmail.com> here: http://review.evervolv.com/#/c/3676/"
  Id: I1fae71e347ffcb786227ba0b2651a66f2df35e27

- Add SET_ALARM permission for SystemUI
  If one or more third-party alarm clock app is installed, clicking clock should
  open an app chooser for the alarm clock. However, permission for
  com.android.alarm.permission.SET_ALARM is required to make this behaviour
  work properly.

Change-Id: I8006e57a953fe0c4be480e0aa27a4c28c672f982
Frameworks: Statusbar clock and date customizations

Some things changed on kitkat + our old code needed in general a bit
rework. All done with this patchset.

This commit add support for:

- Clock and date enable/disable
- Clock and date position
- AM/PM styles multilang support
- color
- Date format
- Date style

Change-Id: I73d854ed5cfb57fa19e4b5554bb10cb2e1ce9b65
SystemUI: don't crash when user disable default apps

If the user has disabled the default clock or calendar application,
System UI will crash when the user clicks the Clock or Calendar
from the notification bar. This patch fixes the issue.

Change-Id: Icdc3679cdd35b5b3a24086e1ada67d0defabc5cb