Introducing HandlerConfig class to give handlers config values they need

handlers/handlerfactory.h

@@ -4,6 +4,6 @@
 #include "handler.h"
 #include "../template.h"
 
-std::unique_ptr<Handler> createHandler(const std::string &action, Template &templ, Database &db, Session &usersession,
-									   UrlProvider &urlprovider, ICache &cache);
+std::unique_ptr<Handler> createHandler(const std::string &action, HandlerConfig &handlerConfig, Template &templ,
+									   Database &db, Session &usersession, UrlProvider &urlprovider, ICache &cache);
 #endif // HANDLERFACTORY_H