TRIVIAL: Fix icon to be 64px vs 67px
TRIVIAL: Fix icon to be 64px vs 67px

- This one icon was too large and causing a cutoff in the sprite box.

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https://codereview.appspot.com/10612043

CanonicalJS/juju-gui,bac/juju-gui,bac/juju-gui,mitechie/juju-gui,CanonicalJS/juju-gui,jrwren/juju-gui,bac/juju-gui,CanonicalJS/juju-gui,jrwren/juju-gui,mitechie/juju-gui,bac/juju-gui,mitechie/juju-gui,mitechie/juju-gui,jrwren/juju-gui,jrwren/juju-gui