Github has a history of not giving a frack what their users want. For example, a few developer friends of mine were reluctant to click any links in their notifications-page, since after they clicked the link, the notification was marked as read
and you might lose track of it, if you just close the browser tab.
So David Badura and I decided to fix this problem by writing a browser extension. The result can be found on Github: https://github.com/larsborn/GithubToDos. After installation (also possible in Opera btw, the best browser there is), the extension injects an "Add ToDo" button on every issue page and pull request. When clicking, it, the URL gets saved to the local storage of the browser. The list of all URLs added like this can then be access through a new button in the header toolbar of github.
You can clone the project from github and add it as an "Unpacked extension" or just head to the Github ToDos on the Chrome Store
and just install it from there. Pull requests are welcome, open an issue, if you find a bug, open source yadayada.