Moved html-webpack-plugin from dev-deps to deps

Author: sanex3339

package.json

@@ -31,6 +31,7 @@
     "express": "4.14.0",
     "extract-text-webpack-plugin": "4.0.0-beta.0",
     "graceful-fs": "4.1.9",
+    "html-webpack-plugin": "^3.2.0",
     "inert": "5.1.0",
     "javascript-obfuscator": "0.19.0",
     "less": "2.7.1",
@@ -52,8 +53,5 @@
     "url-loader": "1.0.1",
     "webpack": "4.4.1",
     "webpack-cli": "2.0.13"
-  },
-  "devDependencies": {
-    "html-webpack-plugin": "^3.2.0"
   }
 }