Use json instead of serialize (#1624)

* Use json instead of serialize

* Fix Upgrade code

* add tree trait

* finish category tree trait

* support select fields

* fix select fields

* refactor admin trait

* fix draft status

* Add new contents type "revision"

* minor refactor

* add more tree view abstracts

* add tree trait to pages

* get ready for tree view pages

* improve page edit

* fix revision

* fix slug

* add router params delegate

* fix params delegate

* fix

* fix

* fix all

* fix all

* fix tree

* fix page link

* fix feed

* fix page

* fix permalink

* fix permalink input

* fix offset query

* Fix typo

* remove proxy methods

* remove unnecessary useage

---------

Co-authored-by: joyqi <joyqi@segmentfault.com>
Co-authored-by: joyqi <magike.net@gmail.com>

admin/extending.php

@@ -3,7 +3,7 @@
 include 'common.php';
 
 $panel = $request->get('panel');
-$panelTable = unserialize($options->panelTable);
+$panelTable = $options->panelTable;
 
 if (!isset($panelTable['file']) || !in_array(urlencode($panel), $panelTable['file'])) {
     throw new \Typecho\Plugin\Exception(_t('页面不存在'), 404);