support groups of nodes for physical groups (gor Guillaume)

implemented "Save groups for nodes" for unv

format needs to be verified

- prepare group of nodes in UNV (for Guillaume)
- prepare delaunay for connected volumes
- test 2nd patch from Michel for phase1() extrusion

dos2unix

add suport for Log10 in matheval

re-add SphericalRaise: it's easier than Warp (it's reversible!) to plot
radiation patterns

add shortcut to draw outines

remove all annoying 3rd level menus

- new alt+r shortcut to switch range modes

new gui for plugins (much better IMHO!)

add test version of fourier model

bof

- polished mesh option strings in gui
- merged modified extrusion patch from <mi.benham@free.fr>

split mesh->general tab into 2 tabs ("general" and "advanced")

_L,_H -> _LL,_HH

depend + cleanup includes