Add updater

[Creaous]

Is your feature request related to a problem? Please describe.
It will be frustrating for the owners of RED7Community sites to keep checking GitHub for updates.

Describe the solution you'd like
Add an updater to the websites or even have another backend such as update.red7community.ml.

Additional context
If another backend does get added it should ONLY be used for the site owners.

[Creaous]

I have realized that since there is 3 different sites on different domains, it will cause issues because you would have to log on to each and update them separately. This could also cause errors if the API is more up to date then the main website or admin panel.

[Creaous]

This is now possible with all of the websites being merged together.

[Creaous]

The updater may be able to work with the built in installer now.