improve manager sort api

scm-core/src/main/java/sonia/scm/Manager.java

@@ -83,6 +83,17 @@ public interface Manager<T extends ModelObject, E extends Exception>
    */
   public Collection<T> getAll();
 
+  /**
+   * Method description
+   *
+   *
+   *
+   * @param comparator
+   * @return
+   * @since 1.4
+   */
+  public Collection<T> getAll(Comparator<T> comparator);
+
   /**
    * Method description
    *