As 7.2 is releasing next week, it would be nice for the patch server to double
check the user has the correct version of the game. Now the patch server rejects
clients that have too new of a version.
I quickly realized that the "Dev" server is under the "Unknown" data center, and
that's kinda hard to select in the client. I'll think about a solution later.
Now the world isn't hardcoded to Gilgamesh, and is configurable. It's also now
the "Dev" server listed in the excel sheet which makes a more sensible default.
It's a hack and only really works going from New -> Old Gridania, but this does
work! It also means Kawari now actually requires a valid game installation,
since it has to read layer group information.
