All simulation examples now take argument -p or filename. All fitting examples are taken out from the persistence tests. All persistence tests pass, but they do not yet test persistence.

This resolves #1071.
Manually repaired AllFormFactorsAvailable.py.

objects (still only first element will be used for simulations)

IDecoration changed to ILayout. Multiple changes in Python user examples to conform new naming conventions.

New Python unittest for testing IntensityData from CMake, all py examples/tests are adjusted for new getIntensityData()

Beam's alpha_i value can also be given as positive value now (internally it needs to be <=0 for incoming beams)