* directsolver should only be compiled in non-MPI mode
* Test Suite: --help prints help message
* new test cases for DiST
* partests/dist_migration requires dynamic load for Vel/VelZero
* test also for uniform refinement
* removed tests/tests directory
* json files are not copied by default, use "make param-files" instead
Merge remote-tracking branch 'origin/master' into contactangle