fix: do not show moderator-hidden pastes in the ajax pastes

includes/Pastedown.php

@@ -10,7 +10,6 @@ class Pastedown extends ParsedownExtra {
         $this->BlockTypes['@'] = ['Purpletext'];
     }
 
-
     protected function blockGreentext($Line)
     {
         if (preg_match('/^>[ ]?(.*)/', $Line['text'], $matches))

public/api/ajax_pastes.php

@@ -20,6 +20,7 @@ $pastes = Paste::with([
     }
 ])->select(['id', 'user_id', 'title', 'expiry'])
     ->where('visible', Paste::VISIBILITY_PUBLIC)
+    ->where('hidden', false)
     ->whereRaw("((expiry IS NULL) OR ((expiry != 'SELF') AND (expiry > NOW())))");
 
 if (!empty($_GET['q']) && is_string($_GET['q'])) {

public/paste.php

@@ -115,6 +115,7 @@ if (isset($_POST['hide'])) {
 
     $paste->is_hidden = $is_hidden;
     $paste->save();
+    $redis->del('ajax_pastes'); /* Expire from Redis so it doesn't show up anymore */
     flashSuccess('Paste ' . ($is_hidden ? 'hidden' : 'unhidden') . '.');
     header('Location: /');
     die();