Refine about.txt used in GUI's about dialogs

 - add version string
 - refer to project website

media/about.txt

-For a description of this application please see the user guide.
-
-University of Applied Sciences Technikum Wien
-All rights reserved.
+Fault InJection Instrumenter (FIJI) $FIJI_VERSION$
+https://embsys.technikum-wien.at/projects/vecs/fiji
 
+Christian Fibich & Stefan Tauner
+Josef Ressel Center for Verification of Embedded Computing Systems
 Department of Embedded Systems
-http://embsys.technikum-wien.at
+University of Applied Sciences Technikum Wien
 
-Josef Ressel Center for Verification of Embedded Computing Systems
-http://vecs.technikum-wien.at
+See LICENSE file for licensing details.