Add Font Awesome (fixes #5443)

...ult/assets/stylesheets/font-awesome-4.7.0/HELP-US-OUT.txt

...ssets/stylesheets/font-awesome-4.7.0/css/font-awesome.css

...s/stylesheets/font-awesome-4.7.0/css/font-awesome.min.css

...sets/stylesheets/font-awesome-4.7.0/fonts/FontAwesome.otf

...lesheets/font-awesome-4.7.0/fonts/fontawesome-webfont.eot

...lesheets/font-awesome-4.7.0/fonts/fontawesome-webfont.svg

...lesheets/font-awesome-4.7.0/fonts/fontawesome-webfont.ttf

...esheets/font-awesome-4.7.0/fonts/fontawesome-webfont.woff

...sheets/font-awesome-4.7.0/fonts/fontawesome-webfont.woff2

.../assets/stylesheets/font-awesome-4.7.0/less/animated.less

.../stylesheets/font-awesome-4.7.0/less/bordered-pulled.less

...ault/assets/stylesheets/font-awesome-4.7.0/less/core.less

...sets/stylesheets/font-awesome-4.7.0/less/fixed-width.less

...ets/stylesheets/font-awesome-4.7.0/less/font-awesome.less

...ult/assets/stylesheets/font-awesome-4.7.0/less/icons.less

...lt/assets/stylesheets/font-awesome-4.7.0/less/larger.less

...ault/assets/stylesheets/font-awesome-4.7.0/less/list.less

...lt/assets/stylesheets/font-awesome-4.7.0/less/mixins.less

...ault/assets/stylesheets/font-awesome-4.7.0/less/path.less

.../stylesheets/font-awesome-4.7.0/less/rotated-flipped.less