Version bumps and fix for unit test.

Offered for your consideration...

## Version changes

* Lift 2.5 -> 2.5.1
* jQuery Module 2.3 -> 2.4
* SBT 12.4
* IntelliJ SBT plugin to latest version
* Eclipse SBT plugin to latest version
* SBT web plugin using new recommended `addSbtPlugin` syntax, and shorted settings in _build.sbt_

## Fix

In testing my changes, I noticed that the _scala_29_ unit test was failing because of a difference between Specs2 for Scala 2.9 and 2.10: `AsResult` is in Specs2 for Scala 2.10.  Fixed by going back to `Result`.