Renomme fichiers selon leur classe

Corrige https://github.com/marienfressinaud/FreshRSS/issues/191

app/App_FrontController.php

@@ -37,7 +37,7 @@ class App_FrontController extends FrontController {
 		include (APP_PATH . '/models/Entry.php');
 		include (APP_PATH . '/models/EntriesGetter.php');
 		include (APP_PATH . '/models/RSSPaginator.php');
-		include (APP_PATH . '/models/Log.php');
+		include (APP_PATH . '/models/Log_Model.php');
 	}
 
 	private function loadParamsView () {

lib/minz/FrontController.php

@@ -63,12 +63,12 @@ class FrontController {
 	 */
 	private function loadLib () {
 		require ('ActionController.php');
-		require ('Cache.php');
+		require ('Minz_Cache.php');
 		require ('Configuration.php');
 		require ('Dispatcher.php');
 		require ('Error.php');
 		require ('Helper.php');
-		require ('Log.php');
+		require ('Minz_Log.php');
 		require ('Model.php');
 		require ('Paginator.php');
 		require ('Request.php');