Nope, doesn't seem like it's possible. Well, not in a way I know of.
There's sentry login, but you have to pay for that, and I'm not sure it'll let you do things like edit the pages, I think it just lets you view certain pages.
There's sentry login, but you have to pay for that, and I'm not sure it'll let you do things like edit the pages, I think it just lets you view certain pages.