manager: wait until autologin is initiated before marking it so

When the slave was merged to the main daemon process, the code for
doing autologin accounting was accidentally moved earlier in the
autologin process.  This caused the greeter to create a login
screen and do autologin at the same time.

This commit defers the accounting until after the operation is
fully initiated.

https://bugzilla.gnome.org/show_bug.cgi?id=726813
manger: rename touch_marker_file to touch_ran_once_marker_file

Rename this function to be more descriptive after some discussion
with Matthias.

https://bugzilla.gnome.org/show_bug.cgi?id=726813
Updated Japanese translation