Removed Balgor Pack

After finally getting the dungeons to load, I've determined that only
half of the rooms should be included. The three remaining rooms should
definitely stay. That's not much for a pack so I'm going to make some
modifications to the schematics and include them as part of Ruins.
Added Dungeons to Ruins

* Added three of Balgor0's dungeons to the Ruins pack
* Made aesthetic and functional improvements to the dungeons