haphazard changes in order to get the code to compile with gradle and maps v2
added maps v2 overlay WIP
code improvements in OverlayFactory, added a downscale factor to create a smaller bitmap for display
added action bar and put menu items in action bar - ifRoom
added skeleton tile provider
tile overlay cobbled together WIP
fixed NPE on screen rotation, fixed bad drawing of points near edge of tiles
found solution for layer flicker
added drawing without flicker and modified import to use system components
all points are returned from the db and are now filtered at display level
fixed import gpx
changed package name, added release configuration