JDF-368 Kitchensink-Cordova for Android - Upgrade Cordova lib to v2.7.0

Upgraded Cordova lib from v2.0.0 to 2.7.0

procedure followed:

1. Remove cordova-2.0.0.jar from the libs directory
2. Add cordova-2.7.0.jar to the libs directory
3. Remove cordova-2.0.0.js
4. Copy the new cordova-2.7.0.js
5. Update HTML to use the new cordova-2.7.0.js file
6. The Cordova Network API changed to Connection API and has been updated
7. config.xml replaced the deprecated cordova.xml and plugins.xml