**Scenario:** Show aggregate data to organizers after the event is over, if there is at least 10 answers on EventDetails special page
===Acceptance criteria===
* Given I am an organizer
** And I go to Special:EventDetails/{eventID}
** And the event has ended and the data is aggregated
** Then I should be able to see a new tab "Response statistics"
** If the event has no answers than this is covered by this task T341341
** Otherwise, we show a list of all question and all options
** And then for each option, if the option has at least 10 answers, we display the number and %
** Else, we just show a message like: 0 to 9 (check the copy later)
** Additionally if at least 1 option has fewer then 10 answers
** Then we do not show percentages for any option for that question
===Design===
[[ https://www.figma.com/file/lJUO73TtMpoyn30zm1qFq7/Campaigns-registration-V2?type=design&node-id=2140%3A62541&mode=design&t=wRWjcQ6dOvEUBIi8-1 | Design specs ]]
[[https://www.figma.com/proto/lJUO73TtMpoyn30zm1qFq7/Campaigns-registration-V2?type=design&node-id=2140-62541&t=itT0hPBrnknMPDcx-1&scaling=min-zoom&page-id=627%3A28978&starting-point-node-id=1779%3A50219&mode=design | Prototype ]]
{F37160322, size=full}