similar bug as in "watch this page" (this being now solved in 1.3.2):
(1)
* Situation: being on a page of user X
* after having sent an "E-Mail this user" an acknowledgment page appears
and returns to Main_page
* However, it is proposed to automatically return to last relevant page
(i.e. the page of User_X) instead
(2)
* After deleting a page (as Admin), the wiki returns to the Main_Page
* It is suggested to return to the previous relevant page (in this case,
the page visited _before_ the now-deleted page)