Build for scala 2.11

Hi,

  I've build widgets module for Scala 2.11. Could you please integrate? In addition I removed unnecessary dependencies and upgrade sbt, log4j and logback to the latest versions.
Done.
But how will you going to make it for Lift 2.5? For my modules I have cross versions compatible with both 2.5 and 2.6. So for 2.5 I need to call only +publish, and for 2.6 both publish and +publish.