Added Installshield 2013 because 2012 wanted a serial. Disabled Book Payment and Unbook Payment Buttons in the Payment View, when course ist selected. Because Application crashes when yout to boo or unbook a payment when courses are selected
Some changes in Pyments and added new Installshield 2013
Merge branch 'master' of https://github.com/FHFlensburg/Diamondback

Conflicts:
	CourseManagement/Client/View/WndIndex.xaml.cs