Pipe STDERR, so we can debug why the server does nothing.

user/plugins/m3-p2/m3-p2.php

@@ -80,10 +80,10 @@ class M3P2Plugin extends Plugin
      */
     public function onPageInitialized()
     {
-        $out = "Trying to sync content with gitlab…\n";
+        $out = "Trying to sync content with GitLab…\n";
 
         # shell pwd is project root
-        $out .= shell_exec("cd user/pages && git pull --rebase origin master") . "\n";
+        $out .= shell_exec("cd user/pages && git pull --rebase --autostash origin master 2>&1") . "\n";
         $out .= shell_exec("fortune | cowsay -e Oø -f dragon") . "\n";
 
         $out .= "Done.";