SWF-2923 : Create pkg-improv branch and update projects versions
Use maven-parent-pom 13-SNAPSHOT
Upgrade itextpdf 5.3.1 -> 5.3.4
Upgrade IBM ICU 3.8 -> 3.8.1
Upgrade JSON Simple 1.1 -> 1.1.1
Upgrade com.sun.xml stream 1.0.1 -> 1.0.2
Upgrade apache commons-fileupload 1.2.1 -> 1.2.2
Upgrade javax.mail 1.4.4 -> 1.4.7
Upgrade javax.jcr API 1.0 -> 1.0.1
Upgrade JDOM 1.1.2 -> 1.1.3
Upgrade Jaxen 1.1.4 -> 1.1.6
Upgrade nekohtml 1.9.14 -> 1.9.20
Upgrade CSS Parser 0.9.7 -> 0.9.13
Upgrade Apache jackrabbit 1.6.4 -> 1.6.5
Upgrade AspectJ 1.6.11 -> 1.6.12
Upgrade Groovy 1.7.6 -> 1.7.11
Upgrade hibernate-commons-annotations 4.0.1 -> 4.0.4
Upgrade eXo Junit Framework 1.2.3 -> 1.2.4
Upgrade Hibernate Core 4.1.6 -> 4.1.12
Upgrade jboss-commons 2.2.9 -> 2.2.22