Old Reddit Sidebar Toggle per drg

Toggles visibility for Reddit's sidebar ("old.reddit.com" ONLY)

- Adds a tab button that toggles Reddit's sidebar to the right.
- Option to auto-hide the multireddits bar to the left.

This extension was originally from:
https://chrome.google.com/webstore/detail/reddit-sidebar-toggle/dckhfmfkjpbkkmfhbfgdppknpopgfaam?hl=en-US