Please backport unity-tweak-tool 0.0.6ubuntu2 (universe) from utopic

Please backport unity-tweak-tool 0.0.6ubuntu2 (universe) from utopic to trusty.

Reason for the backport:
========================
Backporting a feature for which the Release Team didn't have time to approve a Freeze Exemption.
See: https://bugs.launchpad.net/ubuntu/+source/unity-tweak-tool/+bug/1298487

unity-tweak-tool (0.0.6ubuntu2) utopic; urgency=medium

  * Backport upstream commit adding support for minimizing
    single window applications when clicking their icon on
    the launcher (LP: #1298487).

Testing:
========
Mark off items in the checklist [X] as you test them, but please leave the checklist so that backporters can quickly evaluate the state of testing.

Package is available in ppa:andrewsomething/experimental (Please don't actually add that PPA to your sources. I retain the right to break everything in there!)

* trusty:
[x] Package builds without modification
[x] unity-tweak-tool installs cleanly and runs

No reverse dependencies