Fix EclipseCreateSrc.Default so that it includes a project's resources

Fix for https://github.com/typesafehub/sbteclipse/issues/225. Resources are on the classpath when running from the commandline and they should be from Eclipse as well.

I'm not sure why resource isn't part of Default to begin with. I'm guessing this was just implemented by someone who wasn't a heavy Eclipse user and didn't think a "resource" sounded like a "source". I've never run into a situation where you wouldn't want this. We've gotten a number of bugs filed against Play Framework because of this and it's something that's frustrated me for a long time. I finally overrode sbteclipse's default in Play, so that this is now the behavior for anyone using Play, but really it should be fixed here instead.