I'm not sure if Habbox has this issue but I have a few technical people, coders and web designers.
One issue I get from this is that if someone works on a page and uploads it, someone else may be testing something out on that same page and may upload the page, not knowing someone had done anything.
Is there an easy way to prevent this? The easiest way I can think of is probably a folder with updated files, which the users can check before doing any work on their files.