Add a basic task search

core/request.php

@@ -43,4 +43,9 @@ class Request
 
         return '';
     }
+
+    public function isPost()
+    {
+        return isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] === 'POST';
+    }
 }

core/translator.php

@@ -52,6 +52,10 @@ namespace Translator {
 
     function datetime($format, $timestamp)
     {
+        if (! $timestamp) {
+            return '';
+        }
+
         return strftime(get($format, $format), (int) $timestamp);
     }