Added a capybara/poltergeist/phantomjs cross-platform test suite for umpleonline.
Also added a new ant build script, build.websitetests.xml.
See issue 464 for more details.


git-svn-id: http://umple.googlecode.com/svn/trunk@4328 6ebf9d09-8eb1-0036-9d08-68c07d1b990a