Add tooltip to Recipes button

[over9001]

To solve the bug of no tooltip ( #975 )

Thanks for this nice piece of software! I hope I can be of some small help.

This is my first pull request to this project, and I expect that I'll be asked to do something further before it becomes merged, and I'm willing to do it. Please advise. :)

[gorhill]

Thanks for your contribution.

However, can you change

Available recipes for this site

To

Import ruleset recipes into this scope

Thanks.

[over9001]

I have made this change, and stand ready to receive further guidance. :)