Sort matches in the order that they are played

Matches from worldcup.sfg.io are sorted by match number, which isn't too useful
when the matches are not played in the order of their assigned match numbers. A
more appropriate way of displaying the matches is in the order in which they
are played.

Closes #4
Merge pull request #4 from KenanY/sort-by-time

Sort matches in the order that they are played