fixed formating in tweet/jquery.tweet.css, removed unnecessary selectors, fixed border-radius property, replaced some selectors with shorthand versions
fixed formating in tweet/jquery.tweet.css, removed unnecessary selectors, fixed border-radius property, replaced some selectors with shorthand versions

jonathanmachado/tweet,jonathanmachado/tweet,gencer/tweet,purcell/tweet,seaofclouds/tweet,jonathanmachado/tweet,gencer/tweet,seaofclouds/tweet,purcell/tweet