Poll function was too strict for this case that's why there was
no options in operator panel.
Additional changes:
- Added 'direction' parameter to operator so now extruding
could be made from script by providing direction vector.
- Fill this direction vection in operator's invoke functions
so abjusting offset/steps in operator panel gives better visual
feedback -- direction stays unchanged so user could easily see
final result.
- Made some tweaks to soft limits, so adjusting values by mouse
drag isn't such confusing now.
Tested in normal mode (from 3d view), as script and in background mode.
Haven't noticed any regressions.
4734a33215