Bug 920317: Banner cuts off TopSitesPage. [r=margaret]

--HG--
rename : b2g/config/emulator-ics/config.json => b2g/config/emulator/config.json
rename : b2g/config/emulator-ics/releng-emulator-ics.tt => b2g/config/emulator/releng-emulator.tt
extra : rebase_source : cdbc79b907ad0d90ff315966e645535ffb4a39b9