replaced Mozilla Location Service URL

Changed Info URL about the Mozilla Location Service and Mozstumbler to the current/new URL
Update German translations

I was not sure how to translate "observations" so I commented it out for now.
Mehr deutsche Übersetzungen.
Fixes to the geofencing.

Changes the non-blocking UI behavior.
Blocks locations from being reported when `geofence here` is requested.
Fixes #423.
Merge pull request #428 from mghansen256/master

Update German translation (@mghansen256)
Merge pull request #427 from Djfe/patch-1

Update Mozilla Location Service URL (@Djfe)
Fixes as requested by @cpeterso.
Merge pull request #429 from tamcap/geofence_fix

Fix reporting when geofencing is enabled (@tamcap)