The admin can switch between the two default themes without a page
reload, with a nice animation (on small screens). Preference is stored
as a cookie, so the default theme setting will still apply to others.
live reloading was intended for previous release, but needed some
tweaking. Settings that still require a restart are marked with an R.
Fixed issue where default values weren't being filled in on reload of
config that broke emails if settings were changed at all.
Currently all setting changes require a restart to apply, so there's a
bit of commented out code that i implemented before i realized.
Still needs tooltips for each setting.
