Change Permissions in pochePictures.php

Stored Pictures are not accessible (on my server), when permission is set to 0705, but instead, when using 0755 (or for example to 0715) all is working as expected. So maybe it would be good, considering in changing the permission of created directories in the assets directory
Merge pull request #380 from F1reF0x/dev

Change Permissions in pochePictures.php