Added menu class
Merge pull request #9 from ehannes/master

GateTest: help functions updated
Created an AndGate and its testclass.
Created a NandGate and its testclass.
Fixed simulation bug.
Merge branch 'master' of github.com:DAT055-2/OpenFlisp
Modified menubar
Merge pull request #10 from ehannes/master

OrGate: Corrected output for one input
Merge pull request #11 from djqfr/master

Created AND/NAND gates
Merge branch 'master' of github.com:straaand/OpenFlisp into straaand-master
Merge branch 'master' of github.com:DAT055-2/OpenFlisp
Added contains method in Circuit.
Added 2D representation for Circuit.
Fixed simulation input queue error.
EventDelegator: check input arguments for null.
EventDelegatorTest created with simple ComponentEventDelegatorTest.
Added input and output initiation for gates.
Merge branch 'master' of github.com:ehannes/OpenFlisp into ehannes-master
Moved main method to Swing context
Fixed test cases that assumed that Components could not have Outputs at creation.