Updated to compile in 2.9.x

I removed the usage of string interpolation so we can cross compile into 2.9.x versions of Scala.  I also bumped versions of sbt and 2.10 to the latest since they were getting a little stale.  Also, the Lift version is set to 2.5.1.  My understanding is we will need to merge this pull request, and make another commit with 2.6-SNAPSHOT to build both.