[Merge] lp:~3v1n0/unity/track-more-objects into lp:unity

[Marco Trevisan (Treviño)]

The proposal to merge lp:~3v1n0/unity/track-more-objects into lp:unity has been updated.

Commit Message changed to:

Unity use track_obj to safely connect to UScreen and Settings signals (LP: #1748330)

For more details, see:
https://code.launchpad.net/~3v1n0/unity/track-more-objects/+merge/337402
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Your team Unity Team is requested to review the proposed merge of lp:~3v1n0/unity/track-more-objects into lp:unity.