Fixed 'part' of the issue with creating a new world. It auto-loads the
world after exiting the dialog. All that is needed is to automate
exiting the dialog, which is turning out to be more annoying than
originally planned.

Updated Readme.md to account for hazard additions.

Added some more stuff to the resource pack.
Making a new world now instantly loads up that world for editing,
closing the 'New World Dialog' automatically. This heavily assists with
usability.

Removed DialogLauncher class, since it was only used once and was not
sufficiently generic and powerful enough to handle the dialog itself
requesting early closure.