pom.xml: update maven-assembly-plugin to 2.5

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@9750 5f5364db-9458-4db8-a492-e30667be6df6
adjust some chrome expectations

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@9751 5f5364db-9458-4db8-a492-e30667be6df6
adjust some chrome expectations

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@9752 5f5364db-9458-4db8-a492-e30667be6df6
tests added and NPE fix

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@9753 5f5364db-9458-4db8-a492-e30667be6df6
fix: #1652 WebClient.WEB_RESPONSE_FOR_ABOUT_BLANK is static and mutable

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@9754 5f5364db-9458-4db8-a492-e30667be6df6