misc...
* selection system: fixes of: selecting point behind point (not perfectly precise distance)
selecting occluded objects and faces via direct and indirect hits
* select models from back in 2d
misc...
* place created simple patch mesh not in middle of bbox, but on edge to make result more usable
* prefs-interface-layout-single scrollable toolbar
misc...
* changed surface inspector behavior from 'set whole texture projection' to 'set modified value' (makes sense for multiple surfaces selected)
* BP: surface inspector and Tex* binds scale texture by its axes, not world axes
* BP: fix rotation of tex projection with scale S != scale T
* BP: fix ruining nonregular tex projections by surface inspector (for example after fit/seamless/arbitrary projection)
* jump over tex projection scale = 0 case, while modifying one (AP and BP)
