Start Gmsh cookbook

See merge request !343

healShape() on full model should unbind all the entities first, so that we don't end up with both the old and the new entities

show how vertices could be replaced in the bspline patch (code left commented out as a fragment or sewing is necessary anyway)

Bspline filling

See merge request !344

tentative fix for #884: add ENABLE_RPATH option and use different RPATH during build and install phase also on macOS

Allow to send a PView via Onelab if there is only one value inside [e.g. after...

See merge request !342

Allow to send a PView via Onelab if there is only one value inside [e.g. after using Plugin(Integrate)]