Use native Android API for user-location (WebView causes high cpu load, even when IITC is stopped)

Also, move all user-location related functions into new class IITC_UserLocation.
mobile: Fix desktop mode

(plugins would not be reachable)
Merge branch 'desktop-mode' of git://github.com/fkloft/ingress-intel-total-conversion into fkloft/desktop-mode
Merge branch 'orientation-sensor' of git://github.com/fkloft/ingress-intel-total-conversion into fkloft/orientation-sensor
check if actionbar is present before using it