Fix different box heights in filter_horizontal boxes
Fix different box heights in filter_horizontal boxes

The heights are adjusted using javascript in django, but the heights
end up mismatched in grappelli-safe. It turns out that setting the
heights in CSS is enough to make the heights match again.

--HG--
extra : rebase_source : 7fc37de449d20b32e2233143a09be8d4276fedca

dsanders11/grappelli-safe,dsanders11/grappelli-safe,dsanders11/grappelli-safe