new dependency: font-awesome, added feed buttons

static/font-awesome/css/font-awesome.css

static/font-awesome/css/font-awesome.min.css

static/font-awesome/fonts/FontAwesome.otf

static/font-awesome/fonts/fontawesome-webfont.eot

static/font-awesome/fonts/fontawesome-webfont.svg

static/font-awesome/fonts/fontawesome-webfont.ttf

static/font-awesome/fonts/fontawesome-webfont.woff

static/font-awesome/fonts/fontawesome-webfont.woff2

templates/base.html

templates/course.html

templates/course_id.html

templates/index.html