MozStumbler v0.41.0.0

Changes:
-Improve performance of map with large numbers of data points (should handle thousands comfortably) by downsampling the points drawn at each zoom level
-Delete stumble data on 400 errors only
-@piotrdrag Updated Polish translation
-#1039 reduce collection rate, changed 10m->30m and 1s->2s
-@cascheberg Display visible GPS satellites
-@cascheberg About activity cleanup
-@cascheberg Fix observations display
-@cascheberg Fix map resolution info text
-@cascheberg Reporter sends bundles to ObservedLocationsReceiver (and fix Airplane mode)
-#883 add privacy policy to about screen
-@rodmoreno Update spanish translation
-Fix toolbar not undimming on start
-#1027: string changes: Sent (all time) -> All Sessions
-#1023 - Battery low crash fix: Failing to check for null service
-@petercpg Massive update zh-TW localization