Upgraded to Errai 2.4.2.Final
Merge branch 'dev-mode'

Conflicts:
	pom.xml
Update DEVELOP.adoc to reference correct errai versions and no longer mention dev-mode branch
Update gwt jvm args to correct errai devmode version
some clarifications for the new dev mode support
Added links from README to tutorials
minor cleanup to links
UserComplaint wasn't marked as @Bindable (by mistake)
Back to 2.4.2.Final and fixed complaint list item widget
Configure pom to automatically retrieve and unpack jboss-as
Add comments to pom
Remove errai-client-local-class-hider dependency (now a transient dependency)
Remove jboss-as-dist dependency (now a transient dependency)