Provide link to tutorials for current project in Branch help menu

Once a project is analyzed, we provide a help tooltip next to the branch selector, to point the user to the relevant documentation on branch and pull request analysis:

We should provide a new path (/tutorials?id=PROJECT_KEY ?) which shows the relevant tutorials for the current project. We can then put a link in this tooltip (e.g.: "Show me how to set up my CI"), that points to this new path.