mock-as-war goal now works with soapui 4.6.1 #87

Include the web.xml from the SoapUI distribution and adding it to our
project with a fix.
This is not a problem as I previously planned to include this file to add
new features.
Update tests to show the soapui 4.6.1 issue #87

This will help us to track the fix in next versions
Merge branch 'bug-87-mock-as-war-generation-failed-with-soapui-4.6.1' into task-74-support-soapui-4.6.1