refs #8060 Created Muller Ansatz template

with contents equal to Strontium122
refs #8060 should have Ansatz function defined.
refs #8060 intermediate checkout

Ansatz looks more or less reasobable but looking at proper identification for external references
refs #8060 All formally here

The question is how to test all this to be sure it is all right.
Merge branch 'feature/8060_MullerAnsatz' into develop