[Bug 39936] Return to previous session should be default button

[mannheim]

Public bug reported:

Affects: gdm (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed


Description:
If user joe types username and password at the gdm login screen, and if
joe is already logged in at another session, then gdm displays a dialog
with three choices.

"Return to previous session" should be the hightlighted default choice.

At present "Log in anyway" is highlighted as the default choice, whereas
in fact it is more of an "expert" option.
-- 
Return to previous session should be default button
https://launchpad.net/malone/bugs/39936