Fixed rift doors not going away.
removed regen command pending schematicLoader
Prevented 'overworld not loaded' crash, temp fix
Partial Overhaul of Commands

Made progress on overhauling and prettifying our commands. There are
still more changes to be done for this to be functional. I need to do an
intermediate commit because I want to merge in recent changes by Steven.
Merge remote-tracking branch 'upstream/master' into R1.4.0-improvements