routing test adjustments
refs #713
Use AgaviToolkit::expandVariables() in AgaviGettextTranslator, refs #708
Check for existing X-Powered-By header before setting it in WebResponse, closes #716
merge 54022237fee61580ac0430783ee7434df2860afa
merge 017d12828f7d9cbefbccb83662abe7b376b6937a
merge f40237cc4865540766cd85137d3bc24dba31239f