Consider adding locally integrated menus

[gustawho]

This is possible, as demonstrated by this material-theme fork.

[kupiqu]

Open to review pull requests :-)

[CavaleriOmar]

This is a really good idea... I've been looking for a similar solution for months!

[kupiqu]

My aim is that SBE is maintained by the community. I hope someone in the community cares about SBE and submits a pull request about it...