Tidy Font Awesome implementation (hestiacp#3055)

* Tidy Font Awesome implementation

- Replace modified v5.something Font Awesome CSS with LTS v5.15.4 loaded from npm
- Only load core and "solid" Font Awesome CSS instead of everything
- Update/remove unused Font Awesome webfont files

* Bump ESLint version

Author: AlecRust

web/css/dependencies/fontawesome.min.css

@@ -0,0 +1,19 @@
+/*!
+ * Modified Font Awesome css/fa-solid.css to adjust webfonts path
+ * Font Awesome Free 5.15.4 by @fontawesome - https://fontawesome.com
+ * License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
+ */
+@font-face {
+  font-family: "Font Awesome 5 Free";
+  font-style: normal;
+  font-weight: 900;
+  font-display: block;
+  src: url("/webfonts/fa-solid-900.eot");
+  src: url("/webfonts/fa-solid-900.eot?#iefix") format("embedded-opentype"), url("/webfonts/fa-solid-900.woff2") format("woff2"), url("/webfonts/fa-solid-900.woff") format("woff"), url("/webfonts/fa-solid-900.ttf") format("truetype"), url("/webfonts/fa-solid-900.svg#fontawesome") format("svg");
+}
+
+.fa,
+.fas {
+  font-family: "Font Awesome 5 Free";
+  font-weight: 900;
+}

web/css/src/dependencies/fontawesome-solid.css

@@ -1,4 +1,6 @@
 @import url("normalize.css");
+@import url("@fortawesome/fontawesome-free/css/fontawesome.css");
+@import url("../dependencies/fontawesome-solid.css");
 @import url("../dependencies/animate.css");
 @import url("../dependencies/jquery-ui.css");
 

web/css/src/themes/default.css

@@ -9,11 +9,12 @@
     "lint": "eslint js --fix && stylelint css/src/themes/*.css --fix"
   },
   "dependencies": {
+    "@fortawesome/fontawesome-free": "^5.15.4",
     "normalize.css": "^8.0.1"
   },
   "devDependencies": {
     "cssnano": "^5.1.14",
-    "eslint": "^8.27.0",
+    "eslint": "^8.28.0",
     "postcss": "^8.4.19",
     "postcss-cli": "^10.0.0",
     "postcss-import": "^15.0.0",

web/css/themes/default.min.css

@@ -23,4 +23,3 @@
         }
     }
 ?>
-<link rel="stylesheet" href="/css/dependencies/fontawesome.min.css?<?=JS_LATEST_UPDATE?>">