* IReachablePointProvider to get points to place pedestrians (overlap with other pedestrians must be checked)
* GUI to add random pedestrians
* TreeView showing all ScenarioElements in the TopographyCreator.

This allows to calculate the hash value of a given scenario to find
the correct cache version.

Bugfix in "TargetChangerController": "useStaticTargetForAgent()" did not update agent's "nextTargetListIndex" properly

issue#277 fix synchronization problem where the OnlineVis InofPanel is out of sync with the OnlineVis model.

Also fixed incomplete initialization of mock objects
in method "createTwoTargetsAndTwoPedestrians()".

remove fine tune condition in brute force

Closes #278

See merge request !90

By clicking on the short hash value the full hash is copied into the
clipboard for future use.

In "OSMBehaviorController", fixed severe bug in method "findSwapCandidate()" and added TODO comment to write unit tests

[GUI] Visualization: make interpolation configurable.

See merge request !89

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