restructure repo

.../assigning_nodal_values_to_function_at_boundary_values.py

Manuals/doNix.manual.md

Meshes/Plotscript/links

Meshes/Plotscript/plot2d_vtu.py

Meshes/Plotscript/plot3d_vtu.py

Meshes/README.md

Setup/Jupyter_Notebook_Setup/README.md

Setup/Jupyter_Notebook_Setup/requirements.txt

Setup/Jupyter_Notebook_Setup/startup.sh

Setup/README.md

Setup/Rechtesetup/setpermissions.sh

Setup/python_requirement.txt

helper_scripts/README.md

helper_scripts/merge_spacetime_errornorms.py

old_geometry/old_geometry.py