started a new adapter
Merge https://github.com/VandyMobile/guide-android
Merge https://github.com/VandyMobile/guide-android
sorting by distance; Sorting by category started, need category list; couldn't fix crash when PlaceDetailerFragment change orientation
progress: fixed orientation change crash with the detailers, Some initial works on pathing
cleanup; moved the fragment creation codes to the right place in onResume
adjacency list building algorithm
Merge branch 'master' of git://github.com/AliceCengal/guide-android
Added node table to database.  Untested.