Issue #138 : Update only if there are still pedestrians in the scenario and /or still pedestrians to be spawned.

generated sources see issue #227

Add keyboard shortcuts to play, pause and stop animation in post visualization

Closes #81

See merge request !50

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In "run_seed_comparison_test.py" and "run_vadere_console_with_all_scenario_files.py", increased timeouts to avoid errors during CI pipeline.

Further changes:
- Renamed test directory "TESTOVM" to "TestOVM".
- Renamed test directory "TestOSM_Group" to "TestOSMGroup".

In POM files, configured "maven-assembly-plugin" to avoid build warnings and renamed final JAR files.

.gitlab-ci.yml:
- Use new JAR names when packaging via "python3 -m zipfile".

VadereGui/pom.xml:
- Renamed JAR from "vadere" to "vadere-gu".
- Renamed JAR from "postvis" to "vadere-postvis".

"Topography.moveElement()" expects the old position as second argument and not the new position.

In "01_unsupported_event_exception_for_unsupported_models.scenario", changed from Reynolds' to OSM model to avoid failing tests in CI pipeline.

# Conflicts:
#	README.md
#	VadereSimulator/pom.xml
#	VadereUtils/src/org/vadere/util/opencl/CLUtils.java