Calculate go enrichment improvement

[jpquast]

Adds a new argument to calculate_go_enrichment() and also fixes a bug with provided factor columns.

[elena-krismer]

[elena-krismer]

when plotting the barplot the label_size is shown in the legend (which i guess shouldnt be there)

[elena-krismer]

Further I would consider to create the label name when creating the input data, so its accessible from the dataproperty of the plot

paste0(
                .data$n_significant_proteins_in_process,
                "/",
                .data$n_detected_proteins_in_process,
                "(",
                round(.data$n_significant_proteins_in_process / .data$n_detected_proteins_in_process * 100, digits = 1),
                "%)"
              ),

This would allow to adjust the labels after plotting

plot +  geom_text(aes(label = labels), size = 5)

[elena-krismer]

looks good despite the label/pt in the barplot legend

[jpquast]

I think you might not have been in the newest commit since I had already fixed the legend issue.
Thanks for the suggestion regarding adding the label to the data. It is now implemented.