#149 Convert remaining acceptance tests into demos

[Ulf Lorenz]

h5. What and Why

For most acceptance tests, there is some Todo here or there to get rid of them / convert them into demo programs. The exception are the "ShapedLaser" and "DensityOperator" tests. These should be converted into demos either, so that they do not always eat up compilation and testing time during development.

h5. Acceptance criteria

• Create a good demo substitute for the ShapedLaser acceptance test and remove the latter
• Create a good demo substitute for the DensityOperator acceptance test and remove (or remove it directly if the functionality is already covered well by other demos)
• Create / Finalize the Lindblad demos MolVibration/OH/3 and 4