[Merge] lp:~fitojb/ubiquity-slideshow-ubuntu/logo-refresh into lp:ubiquity-slideshow-ubuntu

[Adolfo Jayme]

The icons were given to me by the designer, although at the time I missed that we had a 24×24 variant already and I resized the files myself.
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https://code.launchpad.net/~fitojb/ubiquity-slideshow-ubuntu/logo-refresh/+merge/353025
Your team Ubuntu Desktop is requested to review the proposed merge of lp:~fitojb/ubiquity-slideshow-ubuntu/logo-refresh into lp:ubiquity-slideshow-ubuntu.