was previously activated in the iOS app via dev settings and passed to the watch state, but now just handled by the Watch app. Can be activated/deactivated by tapping 5 times the glucose chart.
using WKInterfaceDevice.current().screenBounds.size the chart size is modified together with text sizes in all views in order to make sure the view renders nicely in small watches
- also widget data is stored in a new userDefaults variable based upon the app bundle to avoid cross-contamination if various versions are installed on the same device
removed widget/watch specific/duplicated extensions, moved common data models to xDrip target and made sure targets are set correctly for all common files.