Updated file header
Introduces the use of local storage into the application

This commit is an attempt to reduce the number of RPC calls to the
server. By caching the user's profile data locally using the storage
space introduced with HTML 5, the number of RPC calls to retrieve
the profile data is reduced.

The code has been introduced in two screens, the ContestDetailsScreen
as well as the ProfileScreen.
Modified the update profile code to update the local storage as well

Modified the update profile functionality to modify the profile data
stored in the local storage in addition to the database. This ensures
that the user experience is as seamless as possible.
Removed the LocalStorage class as it isn't needed.