METAGEN-83 build: update Maven plugin versions
METAGEN-83 build: specify file encoding
METAGEN-83 Update hibernate-jpa-2.0-api to 1.0.1.Final
METAGEN-83 Should not use path separator but file separator
METAGEN-83 Removing unused constant
METAGEN-83 Fixing JAXB incompatabilties - see also HV-528