Fix mark for translation

https://bugzilla.gnome.org/show_bug.cgi?id=729814
password: share files from account page

Remove duplicated and unused files from password page. Change
Makefile accordingly to share the codes with account page.

https://bugzilla.gnome.org/show_bug.cgi?id=702129
password: design changes

Design changes are done according mockup. It corresponds with
User Accounts panel in Gnome Control Center.

Use checkmarks to indicate correct values instead of checkmarks.
Alignment of hints is changed. Hints are dimmed and dynamic.
User-friendy passwords hints are introduced.

https://bugzilla.gnome.org/show_bug.cgi?id=702129
password: remove generated files from git

https://bugzilla.gnome.org/show_bug.cgi?id=702129