[Merge] lp:~ubuntu-mate-dev/indicators-gtk2/indicator-application-gtk2 into lp:ubuntu/indicator-application-gtk2

[Sebastien Bacher]

Review: Approve

Nothing required, out of sponsors with free cycles for review/upload, feel free to land it
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https://code.launchpad.net/~ubuntu-mate-dev/indicators-gtk2/indicator-application-gtk2/+merge/244116
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