#97 lighting updates

skybox has been edited to enable use of hemi lights again.

1. add hemis to all levels with outdoor areas.
2. update menus to change these hemis strength instead of enviro lighting (mostly done)
3. maybe add light color options to menu? or at least to config?
4. update scripts to id the sun through the ‘sun’ property rather than the object name
5. figure out how to get default rotations working for the sun
6. clean up/correct scene init procedure

broke this with a bad commit, redid it, need to go back and add proper lighting to all levels now.

menu changing for hemi strength working fine.

scene init is fixed, menu strength fixed, rest is bonus?

closing as new levels will have slightly different system.