Add new racing track for User tests
Fix collision for new track + add materials
Add buttons on server to toggle lights and overview map.
Fix merge conflict.
Merge branch 'SERVER_BUTTONS_TESTING'
Add missing scene changes; delete MudScript.js; remove debug mode; fix server NullReferenceException.
Actually fix NullReferenceException and remove debug mode; add arrows for new track; make throttler see whole track.
Fix arrows at negative locations.
Merge pull request #6 from LinkyXoth/TESTING_PREPARATION

Testing preparation. Checked and merged.