Changes for library mode (driver routines are now Hopest_mesh and hopest_solver). New readin for
geometry only. Some refacturing of mesh readin routines.
Read Mesh modularisiert. connecitivity_treevertex aufgespalten.
Merge remote-tracking branch 'thomas/develop'
Viel Restrukturierung und Modularisierung der Mesh und p4est wrapper in
einzelne Module fuer die Funktionalitaeten.
Merge remote-tracking branch 'thomas/develop'
High order interpolation for refinement, some cleaning.
merge with new module structure