Add an optional "terms of service". Off of optional config point.

[JakubNer]

Optional "Terms of Service" button:

As an example, pointing to remotestorage.io's ToS, but can be changed for each deployment.

[bencharp]

Sorry to answer only now, but wouldn't it be better to place this link in a footer rather than in this menu?

[raucao]

Makes sense, yeah.