Blender Git Loki

Bunch of fixes and cleanup, also take into account non-alignable stuff (like separators),
they need to actually break alignment!

Tortured even more Dimensions panel of Scene buttons to have a really complex aligned layout.

Things work rather nice (much much nicer than with older code at least!), but there is still
a glitch in alignment in some cases, one pixel, though debug prints show it should be same value,
wonder, looks like some rouding stuff or so...