This also adds general cookie read/write support which I may
use in other parts of the app (e.g. saving data that is entered
in the fields for levels/exp/gems/whatever)
This is VERY hackish, it was literally a "gee wouldn't it be
cool if it could do this? *whip out editor and start coding like
a madman*" things. But it works (for now). Needs a lot of future
proofing (and general rewriting) though.
