live update interesting entries on the front page when judges visit

[gerad]

https://github.com/nko4/website/blob/master/public/javascripts/2012/websocket.coffee#L23-26

# update the interesting entrys on judge visit
ws.on 'judgeVisit', (team) ->
  updateEntryInfo($('#interesting-teams'), team)

[gerad]

This is useful so that multi-player apps have a higher chance of getting some more visitors when a judge starts to review them.