Merge branch 'feature/galerkin-threaded' into 'master'

Threading of GalerkinOperator.

See merge request !34 (merged)

(cherry picked from commit fcb688d6)

98c72cdc [cleanup][ThreadHandle] Renamed to ThreadPool and moved to dune-fem. 0b78e431 [cleanup] remove duplicate parameters 8e9e5d0d [feature][Vortex] Added isentropic vortex case. 96a7e256 [bugfix][Passes] Rerun in single thread mode when SingleThreadModeError b376b9c1 [cleanup][Euler] Enable limited operator by default and set sod as ab59be73 Added OMP_NUM_THREAD to chem test. 5af6db1d [cleanup] Remove warnings and increase timeout. e7e7edbb [feature][ThreadPass] allow to use flexible number of threads. 7a2e0733 add a 'default' for the threading parameter in the dg operator which turns... 92e68922 adapt code to moving threadmanager/pool to mpimanager - setting the max thread... 99db4d58 Set periodic bnd conditions in y-direction to avoid bnd errors. dbe8af02 [bugfix][build-script] Enable shared libs by default. d31cf80c [cleanup][ThreadPass] isMaster --> isMainThread. de827914 [cleanup][Python] .grid --> .gridView ebd1f6e6 Merge branch 'master' into feature/galerkin-threaded