Support multiple concurrently running jobs using the same Servoy installation

[p-bakker]

Servoy advises to let a specific Servoy installation be used by only one job at a time.

This means that either a lot of different Servoy installations are required to run things in parallel or prevent running things in parallel.

This case is to investigate if multiple jobs could use the same Servoy installation concurrently.\

Known items to solve:

• Each job should use it's own repository. Possible solution: use in-memory database
• Each job should be using it's own logfiles. Possible solution: specify job specific log files for the Servoy instances that get fired up for exporting and running of UnitTests