update vaadin to 7.1.6

compile and running test application works
better default for running a simple jboss-as:run
add vaadin-push to support the push method from the UI else example will not work
avoid warnings during maven build about commons-io

The artifact org.apache.commons:commons-io:jar:1.3.2 has been relocated to commons-io:commons-io:jar:1.3.2
Merge branch 'vaadin_7.1.6'
Merge branch 'vaadin_push'
Merge branch 'default_to_hsqldb'
Merge branch 'commons_io'