Attempt to fix turrets ignoring TargetRadius.

Tools can now work through any friendly shield, not just your own.
Turrets now ignore non-friendly shielded blocks.

Turrets now work properly on dedicated servers.

Removed some logging and debug displays.

Turret tracking is now much smoother.
Turrets now display the current target block in terminal info.
Welders no longer try to weld preview blocks.
Fixed a bug preventing welding of some blocks in creative.

Fixed exception in turret targeting with AffectOwnGrid = false.

Turrets now respect AffectOwnGrid.
Tweaked projected block check.

Changed turret targeting code to match welding code for projected blocks.

Deconflicted turret targeting and work threading.

Tweaked the code for getting buildable projected blocks to fix some edge cases.