Redirection to the previous page, after logging-in or logging-out, doesn't
account for being on any subpages or meta-pages associated with that page (being
on an edit screen, for the whole page or a section; being on the history page or
on an old revision; etc).

Motivation: If I go to edit a page, and only then discover I am logged out (this
happens to me frequently, now that my logins are timing out multiple times a
day), it is an extra annoyance that after I log in, I am taken back to the
article page, rather than reloading the edit-screen I had been on.

Version: unspecified
Severity: minor