Add missing scala-library
Add build number profiles

Useful for building on Jenkins servers, including build number in
the output filename. Most projects would want these build numbers,
so including it in the parent POM (can disable per-project if needed).

Borrowed from @odininon's https://github.com/odininon/FES/blob/04aaac543dede74850f24de68a71a71b371575a9/pom.xml - thanks