Updated font-awesome to 5.2

static/font-awesome/css/all.css

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

static/font-awesome/css/brands.css

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

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

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

static/font-awesome/css/fontawesome.css

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

static/font-awesome/css/regular.css

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

static/font-awesome/css/solid.css

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

static/font-awesome/css/svg-with-js.css

static/font-awesome/css/svg-with-js.min.css

static/font-awesome/css/v4-shims.css

static/font-awesome/css/v4-shims.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