UrlProvider: Add pageByTitle()

urlprovider.h

@@ -27,6 +27,8 @@ class UrlProvider
 
 	std::string page(std::string pagename);
 
+	std::string pageByTitle(std::string title);
+
 	std::string linksHere(std::string pagename);
 
 	std::string pageHistory(std::string pagename);