Add MapPin in the page Map
Fix some bugs among MapPins
store latitude and longitude in sqlite with type string
correct some bugs in the page PageMap and add MapFolderList control
Starting the control for linked folders
Add, Remove linked folder to map
Add remove button and function, add show button
Merge branch 'MapFeature'
merge the tile for map
Merge pull request #13 from sawyerlin/master

Map feature - Link, Remove, and add location in the map