Add sorting by a File's Tag Count

src/testhelpers.rs

@@ -48,10 +48,7 @@ impl UserDao for TestUserDao {
     }
 
     fn user_exists(&mut self, user: &str) -> bool {
-        self.user_map
-            .borrow()
-            .iter()
-            .any(|u| u.username == user)
+        self.user_map.borrow().iter().any(|u| u.username == user)
     }
 }