Issue #24 Upgrade Gentelella to the1.4.0 version

Author: v-rudkovskiy

package.json

@@ -16,7 +16,7 @@
     "clean-webpack-plugin": "^0.1.16",
     "cross-env": "^3.2.3",
     "font-awesome": "^4.7.0",
-    "gentelella": "^1.3.0",
+    "gentelella": "^1.4.0",
     "jcarousel": "^0.3.5",
     "jquery": "^3.2.1",
     "laravel-mix": "0.*",