Missing "edit html&css" and "uploads" button for components

[awesomerobot (Kris)]

We’ve restricted local editing of remote themes:

Restrict editing of remote themes

For quite a while, best practice has been to avoid editing themes installed from a remote Git repository locally on Discourse. Any changes to theme code or uploads get wiped out when updating the theme from the remote repo. In this commit, we’ve removed the ability to locally edit a remote theme and are now enforcing this best practice in Discourse. What happens if I have a remote theme with local changes? Nothing at this point. Your theme stays as is until you remove it or update it from re…