Timeperiod is not respected when you force a check

[ganoze]

Comment from Mathieu Cinquin:

I just realized several tests on the consideration of timeperiod with centreon-engine. After applying a timeperiod with an exclude timeperiod if you force control during the exclude timeperiod, the date of next check is more consistent and no longer reflects the exclude timeperiod.

See issue #3 for explanations.

Hope to have been clear.

[ganoze]

Fixed in master.