Allow hiding values of settings in the overview.

assets/css/misuzu/manage/settings.css

@@ -57,9 +57,13 @@
 
 .manage-list-setting-value {
     padding: 5px;
+    max-width: 570px;
 }
 .manage-list-setting-value-text {
     font-family: var(--font-monospace);
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
 }
 
 .manage-list-setting-options {

public/manage/general/settings.php

@@ -12,13 +12,15 @@ if(!User::hasCurrent()
     return;
 }
 
+$hidden = Config::get('settings.hidden', Config::TYPE_ARR, []);
+
 $vars = [];
 foreach(Config::keys() as $key) {
     $var = Config::get($key);
     $vars[] = [
         'key' => $key,
         'type' => Config::type($var),
-        'value' => json_encode($var),
+        'value' => in_array($key, $hidden) ? '*** hidden ***' : json_encode($var),
     ];
 }