Quiet Hours: allow disabling of system sounds (2 of 2)

* this includes touch and lockscreen sounds

Change-Id: Ib703beefbadcae225e892936e1fc9f87415703af
Settings: IT translations

Change-Id: I82b005486747ce8c79d39e0526dc31040b669b77
Merge "Quiet Hours: allow disabling of system sounds (2 of 2)" into cm-10.2
Settings: ES translations

Change-Id: I5340200fedc9a1768dd433ad7f0374abf28ec308
Use default button backlight brightnessk from framework overlay

Change-Id: Ib0361359a29e8030682707bf42c9fe04f780b103
Settings: QS performance profiles tile

Requires http://review.cyanogenmod.org/#/c/51776/

Patchset 2: Fix not null comparation
Patchset 3: Added suggestions
Patchset 4: Fix string
Patchset 5: Rebased
Patchset 6: Rebased
            Move setCurrentValue() inside mPerfProfilePref null check

Change-Id: I578d84002b00e0a7c58cdcaf2a3735bf6bbfdabf
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge "Settings: QS performance profiles tile" into cm-10.2
Settings: DA translation

Patch Set 3:
Changed strings.xml to it's original state
Moved untranslated strings to cm_strings.xml

Patch Set 4:
Changed some strings according to comments

Change-Id: I8c61ded89bdcafd400952913ba244e214aafc54d
Merge "Settings: ES translations" into cm-10.2
Merge "Settings: DA translation" into cm-10.2
Merge "Settings: IT translations" into cm-10.2
Merge branch 'cm-10.2' of https://github.com/CyanogenMod/android_packages_apps_Settings into cm-10.2

# By Dan Pasanen (1) and others
# Via Gerrit Code Review (5) and Morten Jørgensen (1)
* 'cm-10.2' of https://github.com/CyanogenMod/android_packages_apps_Settings:
  Settings: DA translation
  Settings: QS performance profiles tile
  Use default button backlight brightnessk from framework overlay
  Settings: ES translations
  Settings: IT translations
  Quiet Hours: allow disabling of system sounds (2 of 2)