pom.xml: update jetty version

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8665 5f5364db-9458-4db8-a492-e30667be6df6
pom.xml: update svnkit, jfreechart, slf4j and easymock

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8666 5f5364db-9458-4db8-a492-e30667be6df6
more HTMLElement class fixes 

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8667 5f5364db-9458-4db8-a492-e30667be6df6
more HTMLElement class fixes 

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8668 5f5364db-9458-4db8-a492-e30667be6df6
correct version of jetty-maven-plugin

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8669 5f5364db-9458-4db8-a492-e30667be6df6
Forcing build

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8670 5f5364db-9458-4db8-a492-e30667be6df6