Adds 3 Easter alts (Catria, Florina and Aella) to the online game. *Someone else* also returns for a little while to celebrate...!

This code might be a bit messy, but it seems to work after basic testing.

Include testing and offline characters offline; install a version of config.xml without those to production.

This reverts commit bdfd46bdf4354260b16e2c559e20829d2c0281a8.

This reverts commit 37d8b39293e6b53f0333a873e24e4e2d1f237140.