Lockscreen: See through (2/2)

Add the ability to see through lockscreen.
Adapted to kitkat from jellybean by @BigBrother1984

Signed-off-by: D4rKn3sSyS <jesdga95@gmail.com>
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

PS2:

* Indenting and fix of the LOCKSCREEN_SEE_THROUGH variable check.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

PS3:

* Add see through checkbox to security_settings_chooser.xml, reflects the security_settings_lockscreen.xml.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

PS4:

* Made the option available with every lock mode (PIN, Password etc.) cause it works with every mode now.
* Update description with better one.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

PS5:

* Make description more like aosp strings.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

Change-Id: Ife993ffe0833be98fe582146fc071f339445bbc5
[1/2] Setting: Lockscreen maximized widgets

      Enable lockscreen widgets to be expanded by default.

      PA modifications to commit:
          Allow for long press unlock.
          Enable checkbox only if "Enable Widgets" is selected
          Remove preference is device is a tablet (already expanded)

Change-Id: I3d52b752415f48e5468db0804be5c2ff93a71e31
[1/3] Settings: Increasing Ringtone

      Option to set the incoming call ringtone volume to increase
      in pre-defined (user selected) increments.

Linked commits:
      Frameworks - https://gerrit.paranoidandroid.co/#/c/448/
      Telephony  - https://gerrit.paranoidandroid.co/#/c/451/

Change-Id: If7b36bd098dc65c8d418d372d4e0017868826a1f