JBIDE-14430 : rephrase DeploymentContainer errors

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-16093 - NPEs when compiling wildfly codebase
JBIDE-16161 - Tycho tests require org.eclipse.osgi.compatibility.state fragment on Luna
Enable/disable updating pom.xml when adding Arquillian support
A syntax error in pom.xml