Use policykit instead of password entry

[Christopher Townsend]

Instead of using the Python password module in the cli and using PAM in the GUI, use policykit since it is now available in the Unity 8 session.

[Libertine CI Bot (libertine-ci-bot)]

Fix committed into lp:libertine at revision 281, scheduled for release in libertine, milestone Unknown

[Launchpad Janitor (janitor)]

This bug was fixed in the package libertine - 1.3.1+16.10.20160812.3-0ubuntu1

---------------
libertine (1.3.1+16.10.20160812.3-0ubuntu1) yakkety; urgency=medium

  [ Brandon Schaefer ]
  * Update our dbus session socket path to allow for the new session bus
    address while still supporting the older way.

  [ Chris Townsend ]
  * Fix crash where /run/user/$UID/dbus-session doesn't exist when the
    update-puritine-containers click hook runs. (LP: #1606505)
  * Only install the puritine click hook stuff in the python3-libertine-chroot
    package since puritine is only a chroot and remove the unused puritine
    framework.
  * Bump version to 1.3.1.

  [ Larry Price ]
  * Enforce click requirements for container ID. (LP: #1607819)
  * Extend desktop file search to recurse directories. (LP: #1608556)
  * Remove unused dependency on pam. (LP: #1579821)
  * Create bind-mount directories based on information from xdg-user-dir,
    and only mount on container startup. (LP: #1610123)

 -- Christopher Townsend <email address hidden> Fri, 12 Aug 2016 18:58:42 +0000