Implemented graph layouting, hybrid approach using spectral and force based layouting
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This change refactors the GraphController to use the GraphAccess only with a single call that returns a Graph. The Graph
contains all information for visually representing the active Token with all parent and child nodes and edges. This
reduces coupling of the data and logic tiers.
* removed const m_dimensions in VectorBase and replaced it with N
* changed signature of DummyNode::operator=
* fixed warning for DummyNode wrongly declared as class
Added simple layouting functions (implementations for simple grid and circle layout).
Also the graph displays class members and connections (edges) to or from them "correctly" now.
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Manuel