Add option for 128bit floats in check_nodal_quadrature.py
In view-results.py always run oomph-convert

* Avoids issues with failing to convert new .dat files

* oomph-convert itself can decide if it needs to do anything now
Add new 2D Telement square meshes

* union jack: more symmetric than the normal one

* equilateral triangles: seems to work better for conservation
Add some new initial m functions
Use degrees to specify mesh rotations