Add more parameters to "Classification Report"

Add the following parameters to the "Classification Report" workflow element:

1. Parameter "All taxa":
   • Description:

     By default, taxa with no sequences (reads or scaffolds) assigned are not included into the output. This option specifies to include all taxa.
     
     This may be useful when output from several samples is compared. Set "Sort by" to "Tax ID" in this case.
     

   • Value in GUI: a combo box with values "True" and "False".
   • Default value: False
2. Parameter "Sort by":
   • Description:

     It is possible to sort rows in the output file in two ways:
       * by the number of reads, covered by the clade rooted at the taxon (i. e. "clade_num" for this taxID)
       * by taxIDs
     
     The second option may be useful when output from different samples is compared.
     

   • Value in GUI: a combo box with values "Number of reads", "Tax ID".
   • Default value: "Number of reads"