I've updated the (now quite old) roster code to my new style.
This includes simple things like "if (condition)" instead of "if( condition )", but it also incorporates session support to the roster, making the passing around of a lot of the variables a thing of the past.
All .inc files are renamed to .php. This prevents people from being able to read the whole roster script by just typing in the name of the .inc file.
So far everything has been updated, but I'm still looking into a thing or two to implement as well.