fix browser language and buildID for FF17 and FF24

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8717 5f5364db-9458-4db8-a492-e30667be6df6
retested with ff17 and ff24

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8718 5f5364db-9458-4db8-a492-e30667be6df6
fix browser language related test

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8719 5f5364db-9458-4db8-a492-e30667be6df6
migrate another test and fix the build

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8720 5f5364db-9458-4db8-a492-e30667be6df6