[autotools] removed unnecessarry Makefile.ams
[cmake] minor update
[dune.module] suggest dune-istl
[functions.interfaces] minor docu update
[tests.functionals] update
[test.la_container] update
[operators] major refactor
* introduce matrix based bas class, which makes use of generic linear
  solver in dune-stuff
* add istl operators (untested)
* rename DuneDynamic -> CommonDense