Added Google Maps and integrated with ListView

1. Feature: Added Google Maps and integrated with ListView. Now on
clicking listview item, Maps opens up (with in our app only, not Map
application).
2. Added Google Maps Api, OMNI auth Key, Map service, Multiple Device
Permissions for using Google Map.
3. Stopped Landscape Mode (disabled app rotation)
4. Bug Fix: Earlier application used to show name as "loaders" instead
of "Walk North Hill" in Settings->Apps (all apps). Fixed now.

Pending:
1. Right now clicking on destination opens up dummy location map not the
exact location. Needs fix.
2. Dynamic Database
3. Bottom 4 buttons
4. Refresh Item list based on button click.
5. Improve UI (if possible)