Added promotional images

Logo.png & psd, Icon.png & psd
"BS" icon as favicon

LOL
Fixed front page name

It's not Textbook Exchange.
JS function to post to Facebook

JS\fb.js::facebookPost(message) calls FB.login to call FB.api to post a
given message.
Facebook post on entry submit

When an entry is submitted, if the user is logged into Facebook, it will
ask to post the action to their wall before reloading the page.
Fixed FB post on entry submit

It doesn't verify from the user after the first time, which is annoying,
but at least it works.