Nucleotide and RdRp explorer, consolidate match count on left and right panels

[almosnow]

The left panel on the explorer views shows a summary of the matches that exist for a specific set of filters, while on the right, the total number of hits shows a different number in certain conditions. This is actually "ok", because the left panel is showing the total number of SRAs hit, while the right one shows the total number of hits (which could be more than one for a single SRA).

This is confusing for users though, so we should show total number of hits on both sides.