renaming some function in paginator + fixing bug in paginator

- the '*itemPerPage' function are renamed '*itemsPerPage'
- the paginatorFactory now get the route parameters correctly

Controller/SearchController.php

@@ -76,7 +76,7 @@ class SearchController extends Controller
                             $pattern,
                             $name,
                             $paginatorFactory->getCurrentPageFirstItemNumber(),
-                            $paginatorFactory->getCurrentItemPerPage(),
+                            $paginatorFactory->getCurrentItemsPerPage(),
                             array(SearchInterface::SEARCH_PREVIEW_OPTION => false)
                             )];
             }
@@ -104,4 +104,4 @@ class SearchController extends Controller
               );
     }
     
-}
+}