Font-awesome fix

FortAwesome/react-fontawesome#134

gatsby-browser.js

@@ -1,2 +1,10 @@
 import "./src/styles/global.css";
-import "./src/styles/prism.css";
+import "./src/styles/prism.css";
+
+// https://github.com/FortAwesome/react-fontawesome/issues/134
+// The following import prevents a Font Awesome icon server-side rendering bug,
+// where the icons flash from a very large icon down to a properly sized one:
+import "@fortawesome/fontawesome-svg-core/styles.css";
+// Prevent fontawesome from adding its CSS since we did it manually above:
+import { config } from "@fortawesome/fontawesome-svg-core";
+config.autoAddCss = false;