Notification sound-to-vibration conversion toggle

Allows to change the new feature of AOSP 4.2, where all notification are
changed to vibrations on vibrate mode. Instead, allow the old behaviour
to silence sound notifications and to only play vibrations if desired.

Alle credits go to romanbb from AOKP, I just ported it, changed the
position in the menu and the label.

Original AOKP-Commit:
https://github.com/AOKP/packages_apps_Settings/commit/e92446576c2dfbe51089287c43c3f799b5cc0057

Patch set 1-6 : Initial commits
Patch set 7   : Better wording of the summary string
Patch set 8   : Lower case app

Change-Id: I267fc4b62ff045f305cf29c1b4f365e91f7cf1db

Conflicts:
	res/values/strings.xml
	src/com/android/settings/SoundSettings.java
[2/2] Power connect/disconnect notification support

part 1/2: frameworks/base PowerUI and Settings
http://review.cyanogenmod.org/#/c/35241/

part 2/2: packages/apps/Settings Sound settings
http://review.cyanogenmod.org/#/c/35242/

patchset 3:
    set settings persistence and dependencies in xml resource file
    shrink long lines
    add the default notification tone to the ringtone picker and
        remove the now redundant "use default" checkbox
    move values/strings.xml content to the cyanogenmod section
    improve (mostly delete) wording in values/strings.xml
    remove tab whitespace

patchset 5:
    move strings to cm_strings

patchset 6:
    make vibrate optional (default on)
    change heading text: power notifications -> power sounds

patchset 7:
    hide vibrate option if hw capability doesn't exist

patchset 8:
    change vibrate to default to off

Change-Id: I7ddd8a47ae4f9a62c586023d151ac42bbe8424c7

Conflicts:
	res/values/cr_strings.xml
	src/com/android/settings/SoundSettings.java