Some code cleanup. Fixes the tests.

app/Export/Collector/AttachmentCollector.php

@@ -70,6 +70,7 @@ class AttachmentCollector extends BasicCollector implements CollectorInterface
         $this->exportDisk->put($file, $this->explanationString);
         Log::debug('Also put explanation file "' . $file . '" in the zip.');
         $this->getFiles()->push($file);
+
         return true;
     }
 

app/Export/Collector/UploadCollector.php

@@ -58,6 +58,7 @@ class UploadCollector extends BasicCollector implements CollectorInterface
         foreach ($files as $entry) {
             $this->processOldUpload($entry);
         }
+
         return true;
     }