make plotting standalone

[ibressler]

It might be a good idea to modify the plot routines in order to be able to call them as standalone script (from which a standalone program can be made).

• It will enable users to visualize results of previous calculations easily, similar to a result browser.
• It also simplifies complicated result checking if the main program crashed for some reason.
• Additionally, it helps on the way to parallel execution of parts of the program, running the plotting in a separate (python) process/interpreter

[ibressler]

Original comment by Brian Pauw (Bitbucket: toQDuj, GitHub: toqduj).

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HDF5 will be a solution for this. That format now allows for non-blocking read-write operations, so we can access the same calculation results from multiple instances of McSAS. It also allows us to store everything we need in a single hierarchical structure: original data, prepared data, and historical fits and results. Supported by Origin.
The McSAS gui then does not need to be adapted, instead of loading a datafile, you can then load the .h5 file containing the settings using the same GUI. The "re-analyse"-button and new stats should take care of the analysis functionality.