Fixes dataset naming issue and iteration counter

[czarnewski]

In "fa_transfer_to_reference()"

• The variable 'names' was set to None, to it was crashing unnamed AnnData dictionaries or lists because it took the default name "Model_0" from "transfer_to_reference()", making all datasets with the same model names.
• the line 'msg.format(model_name, k + 1, n_adatas)' was missing the '+1'. It was showing 0/2 complete and 1/2 complete, and it should be 1/2 and 2/2.

[czarnewski]

In "fa_transfer_to_reference()"

The variable 'names' was set to None, to it was crashing unnamed AnnData dictionaries or lists because it took the default name "Model_0" from "transfer_to_reference()", making all datasets with the same model names. the line 'msg.format(model_name, k + 1, n_adatas)' was missing the '+1'. It was showing 0/2 complete and 1/2 complete, and it should be 1/2 and 2/2.