Refactor webfort.js for readability

lots of name changes to make the use of specific things clear. Nothing
major.
Add iframe for webchat

TODO: test against a backend.
Disable reflow on game canvas

this way we guarantee a player can see 100% of the screen, even if it's
not as much or too little.
Merge pull request #6 from Alloyed/chat

[RFC] Add IRC pane