Update scss/foundation/components/modules/_topbar.scss

after the commented out "28px", it also removes styles that make the searchbox in the topbar look good. (with it commented out, the searchbox sits on top of the button).
Update scss/foundation/components/modules/_mqueries.scss

fixes the 1px off search button, once the top-bar is in "mobile" dropdown mode.
Merge pull request #1376 from taivu/patch-1

Update scss/foundation/components/modules/_topbar.scss