This chrome extension adds crosses and checks next to the quest based on quest completion.
You can now click on the steps in a quick guide to turn it green, so you can easily keep track where you are at!
You can just install it from the Chrome Web Store! You only have to configure the app afterwards.
Download the zip from the release page, unzip it. Turn on developer mode in chrome extensions and choose "Load unpacked extension."
Just click on the extension in the top right corner, give in your RS username and press "Save options".