Temporarily removed formats choice from data items location form.
When debug is enabled, write the internal mapfile representation to the log stream.
Corrected layer ordering. Far from perfect, but 'moveLayerUp' and 'moveLayerDown' doesn't seem to work with grouped layers.
Corrected layer ordering. Far from perfect, but 'moveLayerUp' and 'moveLayerDown' doesn't seem to work with grouped layers. Quickfix.
Extended interface for layer factories. the generate method now takes the group layer and 'options' as parameters. Improved layer lookup.