Changed to the right form

As long as case sensitivity matters this should be fine. Sorry for the hassle.
Update osmdroid-android to 4.1
Clear osmdroid BitmapBool when activity is stopped

This frees the memory stolen by osmdroid for the cache
Merge pull request #571 from yarons/patch-4

Fix case of "Nateev-WiFi" on SSID blocklist (@yarons)
Merge pull request #573 from illarionov/updateMap

Update osmdroid-android to 4.1 (@illarionov)