Add unfiltered data to the teal_data

[gogonzo]

When passing data to the module all filtered datasets are included in teal_data (by datanames). We need to include unfiltered data (use filtered_data$get_data(filtered = FALSE)) and they should be called <dataname>_raw (look here. Inclusion of this dataset should be reflected in the @code slot

P.S. _raw because it is the shortest name. I wanted to avoid _unfiltered.