Bugfixes and improvements

- Loader classes now take a name for the file they're loading such as
"Rules", "Gamemode", "Map" (probably in the future also "Map Rules
Additions")
- Fixed a bug where in House not all Allies would be parsed
- Added ability to add comments to the start of the map file
- Added INI writing of Tubes section
- Added INI parsing/caching of map mods and writing of them