Upgrade Jetty 9.x and Jacoco
WICKET-5509 Wicket examples' MailTemplate from Page is broken

Render the page directly without using PageRenderer.

(cherry picked from commit 1772dd88bdbadc848ee74b5dc665b0e419836ff2)
Sync the CDI example with the one from wicket-6.x
Update maven-project-info-reports-plugin to 2.7
Add Gym test for the new CDI example - auto conversation
Small simplification of iframe's onload listener - use jQuery.one()
Add Gym tests for Mail Template
Add all Gym tests as targets to Grunt's JSHint task
WICKET-5504 AjaxRequestTarget.append/prependJavaScript cannot handle scripts with new-lines anymore
WICKET-5508 Memory model improvements for Session fields
WICKET-5510 Avoid using jQuery.text() when possible. It is very slow in IE

(cherry picked from commit 36d1901cf556e9d1941a0a662ac2c3735ed8e6a5)
WICKET-5504 AjaxRequestTarget.append/prependJavaScript cannot handle scripts with new-lines anymore

Extend the test to have one evaluation with new lines and another without
WICKET-5505 DefaultPropertyResolver does not respect JavaBean conventions
Minor optimization

Replace usage of String#replace(String, String) with String#replace(char, char) where possible. The first uses Regex and is slower
Java 7 multi-catch
WICKET-5498 OutputComponentPath Html5 compliance
Merge branch 'master' into sandbox/component-queueing-2