Hide features for non-admin users through plugin

[Falco]

I suggest reading the wonderful series on plugins by @eviltrout, it starts here:

Beginner's Guide to Creating Discourse Plugins Part 1: Creating a basic plugin

Building a plugin in Discourse can be really simple, once you learn a couple of quirks. The goal of this post is to create a skeleton plugin and introduce you to the basics. Your development environment Make sure you have a development environment of Discourse running on your computer. I recommend you use the appropriate setup guide and come back when you’re done. plugin.rb Use GitHub - discourse/discourse-plugin-skeleton: Template for Discourse plugins to create a complete discourse…

After read some official plugins on Discourse github page.

Then go trough some plugins on the #plugin category and dig trough their codebase.