-Working join and new-game. This is now actually playable.
-Still TODO:
       - make sure session is preserved across refresh/back clicks (best bet is to add a my-session handler. It should hand you your existing player record, or a fresh one if you're expired/new)
       - add chat to games (the chat pane should really be its own little function/macro)
       - add leave button to games
       - add player info to lobby screen
       - add tokens/minis to the game
       - add other default decks
       - add deck upload feature (your game only, we don't keep 'em)
       - should decks be an actual class? Probably
       - remove current stupid tiny tablecloth

At that point we might actually have a half-way decent game. THEN make it prettier.