Remove the save step from lock screen and quick launch shortcuts

Hear me out on this: none of the settings pages in Android require an
explicit "save" step to be performed by the user. The change is always
made immediately after making a selection. Likewise, other CyanogenMod
screens such as the QS tiles also take effect immediately.

The save step when modifying lock screen slider targets and quick launch
shortcuts is simply put completely unnecessary and distracting. It also
makes it far too easy to accidentally lose all the changes the user has
made.

This commit gets rid of the save buttons and saves the changes
immediately.

Change-Id: I50d3cbd1cf80eafb9cd6b5ee1fca217f6ae6ae07
Active display: allow hiding low priority notifications. [2/2]

Change-Id: I244743ed1a32f59065af3c4507f4132b7d3b0d72
Floating toggles (2/2)

Change-Id: Ic112b854c6209eff31ab379325fdf1e8e0caa361
LockScreen buttons: allow longpress to put device to sleep

Credits to jt134; CM

Change-Id: I47ec055b61f2b5c5f949befc9ed33b1bcd1c04d7
LockScreen battery: add off option [1/2]

Change-Id: I066089b7e8329a68038fa6b51b10164df5ad4962
Settings: Use meaningful titles for gamma controls

There is good anecdotal evidence that the values we modify relate
to specific modifications (contrast, brightness, saturation and the
like) of the display, this change allows us to define descriptive
headings.

Change-Id: I2935924fd86f13e95b919e7b7c7a0bc931ac50bb

Conflicts:
	res/values/arrays.xml