Revert "Prepare for 2.9.0"

Need to fix an NPE when casting without a wand.
Fix NPE on /cast and /castp
Remove ender_portal from the building material list- too lag-tastic.
Remove wand mana when it has Cost Reduction X.
Quick fixup of "Mage" variable naming.
Add a check for an NPE I saw in the logs.

It didn't have a stack trace so... I dunno :\
Turn off dynmap spells by default- might be killing the server.
Add bounce spell
Brief TODO update