use config file to get username/password

ocrloader.py

@@ -66,7 +66,7 @@ def process(cfg, filename, payload, enable_ocr=True):
                   '-F', 'form.widgets.owner=%s' % cfg.get('user'),
                   '-F', 'form.widgets.treating_group=%s' % cfg.get('treating_group'),
                   '-F', 'form.widgets.title=%s' % title,
-                  '-u', 'admin:admin',
+                  '-u', '%s:%s' % (cfg.get('get_username'), cfg.get('get_password')),
                   '%s/@@fileimport' % cfg.get('ged_base_url'),]
         return (t == 0)