General
  This page manages which addons (also known as plugins) are installed.
Manage Repos
  If your webserver has the necessary write permissions, you will see a button labeled Manage Repos, which opens a control panel for managing what plugin repositories are installed. These repos are stored in extend/addon/[repo name]/. The official Hubzilla addon repo can be added by entering the repo URL https://framagit.org/hubzilla/addons.git and choosing a name for the repo such as official. You should see this repo in the list similar to the following: