move config file

nodewatcher2/files/etc/config/nodewatcher2

+config 'prefs' 'prefs' 
+        option 'generate_xml'       '1'
+        option 'generate_json'      '1'
+        option 'enable_gzip'        '1'
+        option 'destination_folder' '/tmp/nodedata'
+        option 'generate_nodewatcher_compat' '1'