[#1674] Update HtmlUnit from v2.8 to v2.12
[#1674] Update Selenium from v1.0.1 to v2.33

[#1674] Update tests for selenium  v2.33 and htmlUnit 2.12

[#1674] Fix tests to run with new version of lib
[#1668] Fix mailer.test.html

[#1674] Desactivate DefaultCssErrorHandler log

[#1674] do not spit out error page
[#1625] Add ability to include file in message files
[#1625] Add documentation and tests
[#1625] Fix include file method
[#1625] Add localized included messages in test-case