refs #2708 - apply security update on drupal core (7.29 -> 7.31)
refs #2708 - apply securyly update on date contrib module (7.x-2.7 -> 7.x-2.8)
refs #2708 - update features contrib module (7.x-2.0 -> 7.x-2.2)
refs #2708 - update search_api contrib module (7.x-1.12 -> 7.x-1.13)
Merge pull request #110 from claudiaifrim/ticket_2708

Ticket 2708 - apply security updates on drupal core and date module