Fixed Bug: same material after every scan
Implemented the shoppingcart (view model logic) plus some design tweaks
Merge remote-tracking branch 'master/master' into livedemo

Conflicts:
	GoMobile/res/values/strings.xml
	GoMobile/src/com/gomobile/Main.java
	GoMobile/src/com/gomobile/Overviewer.java
	GoMobile/src/com/gomobile/model/Bike.java
	GoMobile/src/com/gomobile/technicalservices/MySqlConnector.java