[Merge] lp:~seb128/update-manager/box-use-vertical-space into lp:update-manager

[Sebastien Bacher]

http://ubuntuone.com/6mUJidrQNJEuBjWP80bc8L is how it looks with GTK 3.10 without that change
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https://code.launchpad.net/~seb128/update-manager/box-use-vertical-space/+merge/197042
Your team Ubuntu Core Development Team is requested to review the proposed merge of lp:~seb128/update-manager/box-use-vertical-space into lp:update-manager.