evita: commonize several overlay options

- move to common:
   config_defaultNotificationColor
   config_defaultNotificationLedOn
   config_defaultNotificationLedOff
   config_autoBrightnessLevels
   config_autoBrightnessLcdBacklightValues
   config_autoBrightnessButtonBacklightValues
   config_autoBrightnessKeyboardBacklightValues

- config_screenBrightnessDim already defaults to 10

Change-Id: I38f40b035e858907901ac2a4181413a0255e6d22
evita: remove duplicate mms overlay

Change-Id: I2763a21599e6e650289bb549a82b653f3eadbcfd
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_htc_evita into cd-4.4