Update ObaRegionLoader logic for fetching region info from multiple
sources (local provider, server, Android resource) so it matches the
ObaRegionsTask.
Fix issue where Jackson was failing to parse the Region.supportsXXXX
attributes from the regions.json file (i.e., they were all initialized
to false by default, and this didn't change despite different values in
the JSON file).  ObaRegion methods for "supportsXXXX" attributes were
modified to match name of JSON elements, "supportsXXXXApis".  Uncomment
the RegionUtils code that checks to make sure the region was usable
before using it, since it now works after the above fix.