Visual Mode: fixed an issue where trying to apply a rotation to things that were not seen yet would cause a crash

- Rename some linedef actions and arguments
- Reorganize thing types, increase color use
- Organize common config

Fixed a problem where not selected geometry and things could not be dragged when the "don't move selection if any part of it is outside of map boundary" option was enabled

Re-enable texture scaling

See merge request STJr/UltimateZoneBuilder!11

3D Floor Mode: fixed an issue where new control sectors could not be created if any sector's bounding box completely encompassed the Control Sector Area