Allow communication between applications
Developers need a way of sharing data between applications.
1.- Check if an ApplicationID is installed/purchased
2.- Share files between applications in something that could be called "SharedStorageFiles" instead of "IsolatedStorageFiles".
3.- Share variables between applications in something that could be called "Desharrapamientos" instead of "IsolatedStorageSettings".
4.- Check for pinned ActiveTiles (not modify them, just check if an ApplicationID primary or secondary tile is already pinned)