Try to fix the display ofverylongunbrokenwords
Try to fix an occasional error that's coming from who knows where.

/Users/phil/Projects/personal/twelescreen/app/streamer.js:205
    settings.screen_name_to_category[tweet.user.screen_name].forEach(
                                                             ^
TypeError: Cannot call method 'forEach' of undefined
    at streamer.add_tweet_to_cache (/Users/phil/Projects/personal/twelescreen/app/streamer.js:205:62)
    at EventEmitter.<anonymous> (/Users/phil/Projects/personal/twelescreen/app/streamer.js:130:20)
    at EventEmitter.emit (events.js:95:17)
    at EventEmitter.processTweet (/Users/phil/Projects/personal/twelescreen/node_modules/ntwitter/lib/twitter.js:242:14)
    at EventEmitter.emit (events.js:95:17)
    at EventEmitter.receive (/Users/phil/Projects/personal/twelescreen/node_modules/ntwitter/lib/parser.js:44:12)
    at IncomingMessage.<anonymous> (/Users/phil/Projects/personal/twelescreen/node_modules/ntwitter/lib/twitter.js:258:16)
    at IncomingMessage.EventEmitter.emit (events.js:95:17)
    at IncomingMessage.<anonymous> (_stream_readable.js:736:14)
    at IncomingMessage.EventEmitter.emit (events.js:92:17)