introduction video to the new design & AJAX

[hendrix15]

Please create a short video where you show the typical interaction with our newly designed app and give a quick introduction to AJAX.
Typical interactions include changing the user's own profile, contributing content, searching for a person/room, starting a navigation and changing the floors on the map.
This addresses devs who have difficulties following our new layout or trying to find out how to integrate their new features.
Please don't put too much effort into this video, a simple screencast is enough.