Temporary fix for supporting tiles with different extensions
Added method to get tile extension
Implementing: get map tile type
Removed changes DBHelper for extra column
Fixed mix up between x and y coordinates in map bounds
Implemented: helper class to get map tile type from storage
Merge branch 'master' of https://github.com/CMUPracticum/TrailScribe
Added support for different tile file extensions
GPS icon re-styled
Fixed: displaying location history in real-time
Merge branch 'master' of https://github.com/CMUPracticum/TrailScribe
Merge in cmu/master