[Changed] Caching of JavaScript/CSS files

[admin]

Currently, when you log in to nuBuilder, a new PHP session is started and resources such as JavaScript and CSS files are included. This ensures that the latest version is always loaded and not cached.

However, every time you open an iframe (e.g. Popup window), these files are reloaded instead of being loaded from the cache.
This takes just a split second, but is not necessary. From now on, files will only be loaded once per session, which should give a small speed boost.