模块化，添加webpack支持

hydro/model/contest.js

@@ -11,11 +11,7 @@ const db = require('../service/db');
 const coll = db.collection('contest');
 const collStatus = db.collection('contest.status');
 
-const RULES = {
-    homework: require('../module/contest/homework'),
-    oi: require('../module/contest/oi'),
-    acm: require('../module/contest/acm'),
-};
+const RULES = {};
 
 /**
  * @typedef {import('bson').ObjectID} ObjectID
@@ -197,6 +193,8 @@ module.exports = {
                 : 'finished'),
 };
 
+global.Hydro['model.contest'] = module.exports;
+
 /*
 
 def _get_status_journal(tsdoc):