Update Three

* *Updated the Random categories to contain all randoms, and to be
always on top of the palette*
* *Made all three creep types render an extra indicator of where they
will end up when placed*
* *Fixed another variant issue*
* *Fixed a major issue with tile painting constraints not matching to
the room size when moving an entity*
* *Fixed an issue with shop items*
* *Added some sorting for entities*
* *Added the missing Fat Sack Enemy*
* *Added the missing Blue Baby boss*
* *Changed Source repo to github so I can edit and upload when I'm on
vacation*
* *Going on vacation tomorrow! Will still update, but I won't be able
to test or build*