Improve Font Awesome building and handling

- Bring in Font Awesome through NPM
- Build core styles and Font Awesome through Winter Mix
- Copy webfonts from FA vendor directly dynamically
- Upgrade to latest FA6 release

modules/backend/formwidgets/permissioneditor/assets/css/permissioneditor.css

@@ -4,7 +4,7 @@
 .permissioneditor table{width:100%}
 .permissioneditor table th{padding:30px 4px 8px 4px;color:#2a3e51;font-weight:normal;border-bottom:1px solid #dbe1e3}
 .permissioneditor table th.tab{font-size:13px}
-.permissioneditor table th.permission-type{text-transform:uppercase;font-size:11px;text-align:center;cursor:pointer}
+.permissioneditor table th.permission-type{text-transform:uppercase;font-size:11px;text-align:center}
 .permissioneditor table td{padding:10px 4px;vertical-align:top;border-bottom:1px solid #ecf0f1;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}
 .permissioneditor table td.permission-value{text-align:center}
 .permissioneditor table td.permission-name{font-size:13px;cursor:pointer;color:#777}
@@ -37,4 +37,4 @@
 .permissioneditor table tr:last-child td{border-bottom:none}
 .permissioneditor table tr:first-child th{padding-top:0}
 .permissioneditor table tr.disabled td.permission-name{color:#AAA}
-.permissioneditor table tr.last-section-row td{border-bottom:none}
+.permissioneditor table tr.last-section-row td{border-bottom:none}

modules/system/ServiceProvider.php

@@ -572,14 +572,9 @@ protected function registerAssetBundles()
          * Register asset bundles
          */
         CombineAssets::registerCallback(function ($combiner) {
-            $combiner->registerBundle('~/modules/system/assets/less/styles.less');
-            $combiner->registerBundle('~/modules/system/assets/ui/storm.less');
             $combiner->registerBundle('~/modules/system/assets/ui/storm.js');
-            $combiner->registerBundle('~/modules/system/assets/ui/icons.less');
             $combiner->registerBundle('~/modules/system/assets/js/framework.js');
             $combiner->registerBundle('~/modules/system/assets/js/framework.combined.js');
-            $combiner->registerBundle('~/modules/system/assets/less/framework.extras.less');
-            $combiner->registerBundle('~/modules/system/assets/less/snowboard.extras.less');
         });
     }