Zabbix

..F.I..PS. [ZBXNEXT-1736] limited database upgrade to history and trends tables only

* commit 'c96e34b45b361038fdd83d1946446788dbd60277':
  ........S. [ZBXNEXT-1736] fixed parsing of a number in scientific notation
  ........S. [ZBXNEXT-1736] fixed db check of double type
  ....I..PS. [ZBXNEXT-1736] changed db patch to be optional only for server's history and trends tables
  ..F....... [ZBXNEXT-5691] fixed database upgrade status check