ui: allow blockquote class

packages/ui-default/backendlib/markdown-it-xss.js

@@ -13,7 +13,7 @@ const xss = new Xss.FilterXSS({
     bdi: ['dir'],
     bdo: ['dir'],
     big: [],
-        blockquote: ['cite'],
+    blockquote: ['cite', 'class'],
     br: [],
     caption: [],
     center: [],

packages/ui-default/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.18.14",
+  "version": "4.18.15",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",