Numerous updates:
1 - allow for displaying images on the page, this allows for consistent behavior when working with text
2 - disable IRC posting after a document has been posted. this prevents clicking post to irc multiple times without refreshing page
3 - corrected the recents list to not move the current document to top of the list
4 - added HEAD method support for getting a key's metadata
    (HEAD support requires a fix/update from the connect-route project)
5 - updated some of the shortcut names to mimic document editors (save, new, edit)