Update strings.xml
Merge pull request #1084 from liveasx/patch-101

Update strings.xml
Updated Portuguese (BR) translation
Update strings.xml
Update strings.xml
Merge pull request #1090 from liveasx/patch-102

Update strings.xml
QuietHours: added option for specifying week days
Allows more flexibility for people that work on different days than
Monday to Friday
QuietHours: small adjustments related to week days option
QuietHours: use dedicated preference file for quiet hours
Sometimes we only need to read QH preferences. Loading ledcontrol
preference file just because of that could be overkill.
This optimization is a prerequisite for one of the future features
Lockscreen: several optimizations
- Preferences get reloaded only when changed
- Hook glowpad class methods only once

Revised by bgcngm:
- Don't show blank image after boot when 'Last screen' feature is enabled
(show the last stored screen image instead), by waiting for user to be present
- Handle KeyguardImageService.ACTION_KEYGUARD_IMAGE_UPDATED intent on the newly
created broadcast receiver
QuietHours: added option for muting system sounds
Allows muting following system sounds during quiet hours:
- dialpad tones
- touch sounds
- screen lock sound
- volume adjust sound
- GravityBox charger sounds

Inspired by SlimKat

Revised by bgcngm:
- Adjusted ModPhone for compatibility with SDK 17
Power: added option to ignore proximity wake-up for incoming call
UNC: changed unit for alert only once interval
- allows interval smaller than 1 minute (min. 5 secs)
- max value reduced from 1 hour to 30 minutes
Updated Slovak and Czech translations
Updated Japanese translation
Updated Russian translation
Updated Chinese (Simplified) translation
Updated Portuguese (PT) translation
Settings: don't crash if device has no proximity sensor
QuietHours: mute system sounds feature adjusted for JellyBean