Converted all build.sbt to scala, except for lift

Consolidated the build for all projects into project/Build.scala, with
the exception of the liftdemo and transactliftdemo build.sbt's, which
are still needed for webSettings. Will hopefully remove these soon when
moving to more recent web plugin.

Build is unaltered except that all project names now exactly match
project directory names - will look at tweaking this later to add the
"boxes-" prefix and hyphens back in.