[test] add static check for higher codimension information on grid views
Until now, the static part of the grid check only check on codim 0 structures, e.g., on the index set. This patch also performs these checks on higher codimensions.
For the IndexSet::subIndex method, it will only check whether the method compiles. If codim > 0, it will silently ignore a Dune::NotImplemented exception, so that grids are not forced to implement the method; it simply has to compile.
Note: This check is able to detect the error fix in !86 (merged).
This merge request is basically !89 (closed) , but with Martin's initial implementation removed. As it only lived to be completely replaced 24h later, I didn't see the point in keeping it in the history.