Added empty dataEntry page. Changed tooltips on layout.html to specify
data-container="body", which makes them look better.
nthRound changed to be 1 indexed, and round routes changed to use
nthRound instead of event code. This means that urls won't become
invalid or change radically if organizers add rounds or introduce
cutoffs.
Added ongoing round selectors to /manage/data-entry/.
Added dropdown to select closed rounds for data entry. We allow data
entry for closed rounds, but we show a warning, as it could change the
set of people who should have advanced to the next round.
Merge branch 'master' of github.com:jfly/gjcomps