题目难度自动计算

packages/hydrooj/src/entry/common.ts

@@ -26,7 +26,7 @@ export const builtinHandler = [
 ];
 
 export const builtinScript = [
-    'rating', 'register', 'problemStat', 'blacklist', 'deleteUser',
+    'rating', 'difficulty', 'problemStat', 'blacklist', 'deleteUser',
     'upgrade0_1',
 ];