Example app bug fixed

The example app available on this link had a few bugs:

1. The links to external libraries were not https, which caused some issues when loaded on the demo-server that uses https. Leaflet and jquery files are now bundled with the app. 

2. The angularjs-controller had a bug for the leaflet page. 

Note also that the example app already installed on your server probably doesn't work out-of-the box. You need to reinstall the app, since the API-url is pointing to the wrong URL (inf5750-mal).