db: enforce season date range when entering matches
db: enforce season date range when entering matches

When adding a match, compare the season date range
and allow the match to go in only if the date is
within the range. Seasons with no date range
(e.g. test seasons) allow any date range.

Signed-off-by: Ilija Hadzic <47a09d4a4430975766160361f65fc72633be50b6@gmail.com>

ihadzic/jim,ihadzic/jim,ihadzic/jim