Output improvement

[AndreaIdini]

In file Numerov.cpp function operator<<, modify format of printing wavefunction (in the future this will belong to class States).

Modify the priting format, to include coordinate (from basis). Also to be done for Potential class printing.

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prefer spaces to tabs for ASCII compatibility.

Way better to print all together

x (from the basis)         waveFunction         Probability
0.000000                    1.234e-10            2.012e-20
0.100000 ...
...

Could be made into a easy issue for @Bhez

Originally posted by @AndreaIdini in https://github.com/Scienza/Schroedinger/diffs

[GabrielePisciotta]

• Printing basis coords instead of a simple index

[GabrielePisciotta]

Implemented this format in the State class that prints the coords from basis, the wavefunction and the probability.

[GabrielePisciotta]

@sykhro this is obviously related to the logger. Can you take care of it?