Make "Login/out" block available as Button

[burnuser]

What problem does this address?

"Login/out" is a valuable and maybe also necessary option with disabled admin bar (especially for or subscribers, e.g. intranet, viewing customers, ..."
But the - at the moment only available - display as regular link does not look very professional.

What is your proposed solution?

Allow an optional formatting of "Login/out" as Button too.
That looks - especially placed within page content - much better than a simple link!