[common.crtp] removed static
[la.container.interface] fixes
* add old methods and mark them as deprecated
* added missing virtual
* added missing protected
* added header
[la.container.eigen] tests from dune-gdt run
* added header
* fixed a lot of things
[la.solver] updated due to new containers
* mainly ElementType -> ScalarType
[common.vector] updated due to new containers