Fix magnetostatic field not being added correctly in semi implicit

(semi-implicit) magnetostatic field was not added to the applied field
correctly because:
* get applied field function was not virtual
* Overloaded get applied field had wrong signature
Output debug coeffs when outputing material parameters

To make sure it's noticable if one is set to zero or something...
Format the "build time" so that it does not contain spaces
Updates to control scripts

* New parameters

* Parse now plots m averages (for comparison with e.g. mumag4 or nmag's cubeoid)

* Some bug fixes in parse