Merge pull request #834 from mcmonkey4eva/master

Pull request for fixing minor things
Update DefineCommand.java

Allow definitions to be removed.
Allow definitions to be removed from a queue. (ScriptQueue implementation)
Fix build.

No IDE handy -- first world problems :(
Whoops.
Add TODO
Merge pull request #838 from mcmonkey4eva/master

Pull request for fixed features
Merge branch 'master' of https://github.com/aufdemrand/Denizen