* commit '2c7d40e0322ac3a0b6da9832730ae3986a30f112': (23 commits)
  Merge pull request #754 in ZP/z-push from bugfix/ZP-1438-rhel-7-packages to develop
  Merge pull request #752 in ZP/z-push from bugfix/ZP-1438-rhel-7-packages-are-incompatible-with-remi-php-7.x-packages to develop
  Merge pull request #750 in ZP/z-push from bugfix/ZP-1455-nginx-change-location-from-regex-match-to-prefix-match to develop
  Merge pull request #747 in ZP/z-push from bugfix/ZP-1225-gal-search to develop
  Merge pull request #746 in ZP/z-push from bugfix/ZP-1456-categories-are-lost-when-marking-email-read-unread-on-shared-account to develop
  Merge pull request #748 in ZP/z-push from bugfix/ZP-1457-firstdayofweek-missing-for-recurring-tasks to develop
  Merge pull request #745 in ZP/z-push from bugfix/ZP-1455-nginx-change-location-from-regex-match-to-prefix-match to develop
  Merge pull request #739 in ZP/z-push from bugfix/ZP-1447-php-mbstring-is-needed-on-debian-9-as-well to develop
  Merge pull request #743 in ZP/z-push from bugfix/ZP-1452-fix-logrotate-for-rhel6 to develop
  Merge pull request #742 in ZP/z-push from bugfix/ZP-1449-private-items-stripped-in-own-calendar to develop
  Merge pull request #738 in ZP/z-push from bugfix/ZP-1444-koe-webservices-calls-fail-for-impersonated-stores to develop
  Merge pull request #737 in ZP/z-push from bugfix/ZP-1445-mapi_e_store_full-handling-in-sendmail to develop
  Merge pull request #736 in ZP/z-push from feature/ZP-1442-retry-loop-when-writing-file-state-machine-data-to-disk to develop
  Merge pull request #735 in ZP/z-push from bugfix/ZP-1440-outlook-eas-break-meeting-request to develop
  Merge pull request #733 in ZP/z-push from bugfix/ZP-1437-send-range-in-itemoperations-response to develop
  Merge pull request #728 in ZP/z-push from bugfix/ZP-1014-z-push-include-z_caldav.php-585-undefined-index to develop
  Merge pull request #729 in ZP/z-push from bugfix/ZP-454-error-deleting-an-occurrence-on-a-mobile-device to develop
  Merge pull request #725 in ZP/z-push from bugfix/ZP-1436-z-push-log-files-not-writable-after-logrotate to develop
  Merge pull request #652 in ZP/z-push from bugfix/ZP-1345-own-private-items-stripped-when-folder-is-in-additionalfolders to develop
  Merge pull request #640 in ZP/z-push from bugfix/ZP-1345-own-private-items-stripped-when-folder-is-in-additionalfolders to develop
  ...