Upgrade Seam-integration to a final version.

I can see jboss-seam-integration brings in Beta/CR depedencies, so obviously those need to be updated to the latest close to final (GA) releases, if possible:

[INFO] +- org.jboss.seam.integration:jboss-seam-int-microcontainer:jar:5.0.0.CR2:compile
[INFO] +- org.jboss.seam.integration:jboss-seam-int-jbossas:jar:5.0.0.CR2:compile
[INFO] | - org.jboss.seam:jboss-seam:jar:2.1.0.BETA1:compile
[INFO] | - org.jboss.el:jboss-el:jar:1.0_02.CR2:compile