To install the userscripts, install a userscript manager:

• Firefox: https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/
• Chrome: https://chrome.google.com/webstore/detail/tampermonkey/dhdgffkkebhmkfjojejmpbldmpobfkfo

Then click on the userscript you want to install, create a new userscript on either of the userscript managers, paste the code, save it and voila, you're done.

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