Corrected comment.
Merge branch 'master' into fun_with_validators

Conflicts:
	ComputerSystemsSoftwareCore/src/main/java/edu/kpi/pzks/core/model/Graph.java
Fixed bug with arrows in system graph.
Fixed bug with file open/close if no filter is chosen.
My Theme. BTW, example how we can easily change theme a bit.
merge
orientation