Consent count report should not count missing constents as consents with unknown date

[olle]

Consent count report should not count missing consents as consents with unknown date.

1. The "Unknown date" column in the first table in the consent count report should only include items coupled to an actual consent form.
2. The second table should still include a column with missing consents, but the table title should be clarified to read "# Consent forms of different types for cases and blood samples with unknown consent date, as well as items with missing consent".
3. The "Total" column should never include missing consents.
4. The number of missing consents for all sites should be shown in the comments section under the second table, with a note that these items are not included in the "Total" column.

[olle]

Ticket accepted.

[olle]

Traceability note:

• The consent count report was introduced in Ticket #426 (Consent count report generator).
• It was updated in Ticket #428 (Reports should have sites in alphabetic order and a column with latest item dates).
• The consent count report was updated in Ticket #430 (Consent count report should allow time period selection).

[olle]

Updated ticket description concerning "Total" column and put changes in list form.