GCM: refactor and patch wake-locking issue

Merge branch 'master' of https://github.com/NightscoutFoundation/xDrip …

…into jamorhamvoice

WixelReader: reduce code complexity

Add: SensorSanity raw validation

Add Source Wizard

Merge pull request NightscoutFoundation#326 from NightscoutFoundation…

…/tzachi-libre-trend4

Tzachi libre trend4

CompatibleApps: check on xDrip install

build.gradle add UUID

OB1 G5: preference option for unpairing

Merge branch 'master' of https://github.com/NightscoutFoundation/xDrip …

…into jamorhamvoice