settings: fix exception in BatterySipper.getQuickNameIconForUid

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Change-Id: I4da880532788de78debffe594faf08eee0389014
Settings: recover last location state during on/off switch

based on the behaviour change on QS here:

https://gerrit.slimroms.net/#/c/1421

we go now same way in settings. Tbh not sure what the goal is to
force the user after switching off to enable always high accuracy
location. Whatever we use here same attempt like in QS tile....if the
user switches on again it recovers the last enabled state.

Change-Id: I887e2a94af379770dac7dbedb5d3d8002a554163
Quicksettings: change reference from GPS to Location