Added automatically switching theme between Light/Dark depending on time and light sensor value
Dynamically determine Address fragment filter colors depending on theme instead of hardcoding them
Fixed crash when destination for Map fragment was set while the map view was null
Added support for inverted basemap in night mode
Added another OutOfMemoryError prevention for map view as suggested in https://code.google.com/p/osmdroid/issues/detail?id=265
Reverted setting maximum zoom level of map view higher than those of the tile providers, because it doesn't load new tiles from other levels