add settings page. Require users to do the compatibility test. Update header bar on main page
some love on the inventory gui, which was throwing errors left and right
finally fix long standing issue with 3DR integration. Clients can now load any model that the server account has access to.
hook up a few more things to the undo system. MAke the heirarchy manager update when changes occur
fix some drama with the spline tools.
serve special case worlds from examples folder