simplify bindings of exceptions
[core.bindings] add Stuff::Common::Configuration
[operators.base] update solver usage
[discretizations.interfaces] refine solve()

Make use of types() and options() of the linear solvers in dune-stuff.
[discretizations] add bindings for solver_types() and solver_options()
[core]bindings] fix bindings of Configuration
[discretizations] use solver_options in bindings and wrapper
[operators.affine] allow freeze_parameter() for nonparametric operators