[FIX] survey: don't show leaderboards if no nickname question in survey

Before this commit, after each scored question, a intermediate leaderboard was
shown, before going to the next question, even if no 'nickname' question was
present in the survey. So that the leaderboards were display only 'anonymous'
attendees, which is not really useful. Also, after last question, the final
leaderbaord was not shown and the survey was closed immediatelly, which was not
really coherent (show intermediate leaderboards but not the final one).

After this commit, the leaderboards and the final one are shown only if a
nickname question is present on the survey, so attendees can identify
themselves and retreive their ranking on each leaderboards.

Task ID: 2230980

X-original-commit: dd409de096c48f22476aff3f37526bc76c1cde12

0 files changed, 0 insertions, 0 deletions