to sign in page after sign up instead of root path which redirects to /about

all required resource links (profile page, salmon, atom feed, magic key)

Using `-strip` cli options from ImageMagick

http://www.imagemagick.org/script/command-line-options.php#strip

fix #85

Also upgrade react-redux to latest version. This is a performance update

Also, only update relative time every minute instead of 6 seconds. My bad

This prevents the undefined profile from being opened in the first place on such an error