implementation of Bitonic sort on the GPU.

See merge request !30

increase the nTrail for the seating test since it is a test that involves probability therefore a larger sample is necessary.

synchronize scenarioStore access. Use exact exponential function for pedestrian and obstacle potential calculation

Remove reflection where reasonable; closes #91 and fixes #86

See merge request !28

Changed parameters for stair test cases (spawn pedestrians only at free spaces and use random positions for spawning).

UltimateBug fix (try) by making sure that only the GUI-Thread changes the ScenarioStore object if the GUI is used and no mix between GUI thread and another thread.

add useful processors for later processorTests to the OSM-Tests. Change old processors in TestSFM to the new format.

update the AttributeAgents values to the values in weidmann-1993 and seitz-2016c for all model test scenarios.