refactor: import fa directly in styles.scss

Author: fredrik-lundin

.angular-cli.json

@@ -21,8 +21,7 @@
       "prefix": "app",
       "serviceWorker": true,
       "styles": [
-        "styles.scss",
-        "../node_modules/font-awesome/scss/font-awesome.scss"
+        "styles.scss"
       ],
       "scripts": [],
       "environmentSource": "environments/environment.ts",

src/styles.scss

@@ -1,4 +1,6 @@
 @import '~@angular/material/theming';
+$fa-font-path: "~font-awesome/fonts";
+@import "~font-awesome/scss/font-awesome";
 @import './app/operators/operator-theme';
 @import './styles/code-helpers';