refactor: improve logging (DEV-634) (#2021)

Author: subotic

webapi/src/main/scala/org/knora/webapi/responders/admin/SipiResponderADM.scala

@@ -131,7 +131,7 @@ class SipiResponderADM(responderData: ResponderData) extends Responder(responder
           )
       }
 
-      _ = println(s"SipiResponderADM returning permission code $permissionCode")
+      _ = log.info(s"filename ${request.filename}, permission code: $permissionCode")
     } yield response
   }
 }

webapi/src/main/scala/org/knora/webapi/routing/admin/SipiRouteADM.scala

@@ -39,7 +39,7 @@ class SipiRouteADM(routeData: KnoraRouteData) extends KnoraRoute(routeData) with
             projectIDAndFile(1),
             throw BadRequestException(s"Invalid filename: '${projectIDAndFile(1)}'")
           )
-          _ = println(s"/admin/files route called for filename $filename")
+          _ = log.info(s"/admin/files route called for filename $filename")
         } yield SipiFileInfoGetRequestADM(
           projectID = projectID,
           filename = filename,