Status Bar Color [2/2]

Change-Id: Ie84b681343356675277319fd667375cc99924d19
Settings: Add time-context headers to the notification header [2/2]
[1/2] Notification drawer: custom clock & calendar shortcut

Base: https://gerrit.omnirom.org/#/c/4811/

PS10:
added AppSelectListPreference and use for clock and calendar
SmoothProgressBar: User Custom ProgressBar Setting[1/2]