settings/altdev: fix up settings to match -dev.
use the minifed splash-screen stylesheet (bug 965925)
for fireplace load as body.overlayed to disable scrolling (bug 966051)
Make region/carrier choices in rocketfuel API serializable, to answer OPTIONS (bug 984899)
Merge pull request #1873 from diox/rocketfuel-api-choices-options

Make region/carrier choices in rocketfuel API serializable, to answer OPTIONS (bug 984899)