Feature/improve bboxtree

See merge request !748

In case one dimension is very small take the maximum between the to be tested box dimensions
in the corresponding axis direction. There is one corner case left where the epsilon is very small:
If there are two bboxes of lines, both parallel in an axis direction, their collision is only
detected if the coordinates are an exact match. However, we currently do not see any used case
where this might occur.

[seq][bugfix] Fix par solver construction, AMG has now a default constr too but for only sequential runs.

Make FVGridGeometry independent of TypeTag

See merge request !742

Mpfa contributed by DennisGlaeser

Dennis Gläser authored 7 years ago and Timo Koch committed 7 years ago

This is not used by means of the property system anymore

Dennis Gläser authored 7 years ago and Timo Koch committed 7 years ago

This will become necessary when e.g. the L-scheme is re-implemented into DuMux.
It will have to be done in a different way anyway, so for now we delete this.