ui: problem_files: pjax support

packages/ui-default/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.8.13",
+  "version": "4.8.14",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",
@@ -22,6 +22,8 @@
     "@babel/preset-react": "^7.13.13",
     "@babel/register": "^7.13.14",
     "@babel/runtime-corejs3": "^7.14.0",
+    "@blueprintjs/core": "^3.44.2",
+    "@blueprintjs/icons": "^3.26.0",
     "@hydrooj/utils": "^1.0.15",
     "@undefined-moe/monaco-yaml": "^2.5.0",
     "ansi_up": "^5.0.1",