extra dependencies in the demo web-info lib

[ludoch]

The demo web-inf lib should not need these 3 jars.
appengine-api-stubs
appengine-tools-sdk (used currently only to import a static string that could be copied
appengine-api-labs (this one most of the time, unless you need experimental apis
Maybe related to issue #1, Still looking at trying to make the test and the devserver running at the same time (could do the 2 but with different poms...)