Merge pull request #32 in ZP/z-push from bugfix/ZP-670-autodiscover-use-http_response_code to develop

* commit 'd4524802':
  ZP-670 Use http_response_code. Released under the Affero GNU General Public License (AGPL) version 3.

Merge pull request #31 in ZP/z-push from feature/ZP-669-compat-add-function-http_response_code to develop

* commit '4c356e5e':
  ZP-669 Add function http_response_code to compat. Released under the Affero GNU General Public License (AGPL) version 3.

Merge pull request #30 in ZP/z-push from feature/ZP-668-mimedecode.php-update-version-and to develop

* commit '59494017':
  ZP-668 Update mimeDecode.php. Released under the Affero GNU General Public License (AGPL) version 3.

Merge pull request #22 in ZP/z-push from feature/ZP-659-backendcombined-add-changessink-methods to develop

* commit '1af618fb':
  ZP-659 Remove else. Released under the Affero GNU General Public License (AGPL) version 3.
  ZP-659 - Add ChangesSink methods. Released under the Affero GNU General Public License (AGPL) version 3.

* commit '932566a2':
  ZP-665 New backend LDAP. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-670 Use http_response_code. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-669 Add function http_response_code to compat. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-668 Update mimeDecode.php. Released under the Affero GNU General Public License (AGPL) version 3.

Merge branch 'develop' of https://stash.z-hub.io/scm/zp/z-push into feature/ZP-659-backendcombined-add-changessink-methods

Conflicts:
	src/backend/combined/combined.php

Merge pull request #17 in ZP/z-push from feature/ZP-565-add-folderid-to-the-exportchangesdiff--initializeexporter to develop

* commit '3d7b775b':
  ZP-565 Added folderid to the output of found changes. Released under the Affero GNU General Public License (AGPL) version 3.

* commit 'e070d653':
  First check if neither object has the array property set, and if that is the case log it at debug level and continue with the comparison of other properties.

Merge pull request #23 in ZP/z-push from feature/ZP-660-backendcombined-implement-searchprovider to develop

* commit '6a8f86d7':
  ZP-660 Implement SearchProvider. Released under the Affero GNU General Public License (AGPL) version 3.

Merge branch 'develop' of https://stash.z-hub.io/scm/zp/z-push into feature/ZP-660-backendcombined-implement-searchprovider

Conflicts:
	src/backend/combined/combined.php

Merge pull request #24 in ZP/z-push from feature/ZP-661-backendcombined-return-min-as-version to develop

* commit '37b2caa8':
  ZP-661 Return AS supported version. Released under the Affero GNU General Public License (AGPL) version 3.

* commit '5c41dc02':
  ZP-662 Simplify BackendCombined config. Released under the Affero GNU General Public License (AGPL) version 3.

* commit '43dd0a50':
  ZP-663 Lower log level. Released under the Affero GNU General Public License (AGPL) version 3.

Merge branch 'develop' of https://stash.z-hub.io/scm/zp/z-push into bugfix/ZP-663-backendcombined-reduce-log-levels

Conflicts:
	src/backend/combined/combined.php

Merge pull request #27 in ZP/z-push from bugfix/ZP-664-backendcombined-don-t-execute-logoff to develop

* commit '595ae7c5':
  ZP-664 Don't execute Logoff if not needed. Released under the Affero GNU General Public License (AGPL) version 3.

* commit '0f217d9c':
  ZP-666 Updated version z_RFC882. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-666 Updated version z_RFC882. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-664 Don't execute Logoff if not needed. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-662 Simplify BackendCombined config. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-661 Return AS supported version. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-660 Implement SearchProvider. Released under the Affero GNU General Public License (AGPL) version 3.

Merge pull request #21 in ZP/z-push from bugfix/ZP-658-backendcombined-add-emptyfolder-function to develop

* commit 'e83df703':
  ZP-658 Add EmptyFolder function. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-659 - Add ChangesSink methods. Released under the Affero GNU General Public License (AGPL) version 3.

Merge pull request #20 in ZP/z-push from bugfix/ZP-657-backendcombined-wrong-parameter-name to develop

* commit 'bbd1fd4d':
  ZP-657 Wrong parameter name. Released under the Affero GNU General Public License (AGPL) version 3.

ZP-658 Add EmptyFolder function. Released under the Affero GNU General Public License (AGPL) version 3.

* commit 'e47a725a':
  ZP-651 Use user agent exposed by DeviceManager (depends on ZP-655). Released under the Affero GNU General Public License (AGPL) version 3.

Merge pull request #18 in ZP/z-push from feature/ZP-655-provide-getter-function-to-retrieve to develop

* commit '4c50ac89':
  ZP-655 Added GetUserAgent to DeviceManager. Released under the Affero GNU General Public License (AGPL) version 3.

Released under the Affero GNU General Public License (AGPL) version 3.

Affero GNU General Public License (AGPL) version 3.

Affero GNU General Public License (AGPL) version 3.

* commit 'd15b4438':
  ZP-651 #comment use DeviceType if UserAgent is not available

ZP-652 #comment better diffstate performance

* commit '8cd0a71f':
  - improve performance, by not iterating for each entry through all entries, but initially create an associative array of old entries indexed by their key and then iterating through the new entries once identifying new, modfied or removed entries (this makes a hugh difference eg. for addressbooks with a couple of thousand entries more then a factor of 10) - it drops the requirement that ids need to be in ascending order, new diff code works also if $new contains smaller ids. That happens eg. for us when a users unsubscribs from a mail folder and subscribes again