Settings: NL translation

ps1: Add an option to allow a (subtle) notification vibration during calls

ps2: rearrange strings to match order in English

ps3: Lockscreen options : Camera/widgets toggle

ps4: Introduce Privacy Guard Manager

ps5: remove unused string

ps6: enhance app logic

Change-Id: I5467174fa0bb796717c4e1386756c1a9f09e995b