Log Message:
Update SOGo to 2.3.19.

2.3.19 (2017-01-09)
-------------------

Enhancements
 - [core] added handling of BYSETPOS for BYDAY in recurrence rules
 - [core] improved IMIP handling from Exchange/Outlook clients
 - [web] update jQuery to version 1.12.4 and jQuery UI to version 1.11.4
 - [web] added SOGoMaximumMessageSizeLimit to limit webmail message size
 - [web] added photo support for LDIF import (#1084)
 - [web] updated CKEditor to version 4.6.1

Bug fixes
 - [core] honor blocking wrong login attemps within time interval (#2850)
 - [core] use source's domain when none defined and trying to match users (#3523)
 - [core] properly honor the "include in freebusy" setting (#3354)
 - [core] fix events in floating time during CalDAV's PUT operation (#2865)
 - [core] handle rounds in sha512-crypt password hashes
 - [web] return login page for unknown users (#2135)
 - [web] append ics file extension when importing events (#2308)
 - [web] set a max-height so we can scroll in the attendees list (#3666)
 - [web] set a max-height so we can scroll in the attachments list (#3413)
 - [web] handle URI in vCard photos (#2683)
 - [web] handle semicolon in values during LDIF import (#1760)
 - [eas] properly escape all GAL responses (#3923)
 - [eas] properly skip folders we don't want to synchronize (#3943)
 - [eas] fixed 30 mins freebusy offset with S Planner
 - [eas] now correctly handles reminders on tasks (#3964)
 - [eas] do not decode from hex the event's UID (#3965)
 - [eas] add support for "other addresses" (#3966)
 - [eas] provide correct response status when sending too big mails (#3956)

2.3.18 (2016-11-28)
-------------------

New features
 - [eas] relaxed permission requirements for subscription synchronizations \ 
(#3118 and #3180)

Enhancements
 - [core] added sha256-crypt and sha512-crypt password support
 - [core] updated time zones to version 2016h
 - [eas] initial support for recurring tasks EAS
 - [eas] now support replied/forwarded flags using EAS (#3796)
 - [eas] now also search on senders when using EAS Search ops
 - [web] updated CKEditor to version 4.6.0

Bug fixes
 - [core] fixed condition in weekly recurrence calculator
 - [core] always send IMIP messages using UTF-8
 - [web] fixed support for recurrent tasks
 - [web] improved validation of mail account delegators
 - [web] allow edition of a mailbox rights when user can administer mailbox
 - [web] restore attributes when rewriting base64-encoded img tags (#3814)

2.3.17 (2016-10-20)
-------------------

Enhancements
 - [web] allow custom email address to be one of the user's profile (#3551)
 - [web] the left column of the attendees editor is resizable (not supported in \ 
IE) (#1479, #3667)

Bug fixes
 - [eas] make sure we don't sleep for too long when EAS processes need interruption
 - [eas] fixed recurring events with timezones for EAS (#3822)
 - [eas] improve handling of email folders without a parent
 - [eas] never send IMIP reply when the "initiator" is Outlook 2013/2016
 - [core] only consider SMTP addresses for AD's proxyAddresses (#3842)

2.3.16 (2016-09-28)
-------------------

New features
 - [eas] initial support for server-side mailbox search operations

Enhancements
 - [eas] propagate message submission errors to EAS clients (#3774)
 - [web] updated CKEditor to version 4.5.11
 - [web] added Serbian (sr) translation - thanks to Bogdanović Bojan

Bug fixes
 - [web] correctly set percent-complete for tasks from the list view (#3197)
 - [core] fixed caching expiration of ACLs assigned to LDAP groups (#2867)
 - [core] we now search in all domain sources for Apple Calendar
 - [core] properly handle groups in Apple Calendar's delegation
 - [core] make sure new cards always have a UID (#3819)

2.3.15 (2016-09-14)
------------------

Enhancements
 - [web] don't allow a recurrence rule to end before the first occurrence

Bug fixes
 - [eas] properly generate the BusyStatus for normal events
 - [eas] properly escape all email and address fields
 - [eas] properly generate yearly rrule
 - [core] strip protocol value from proxyAddresses attribute (#3182)
 - [web] handle binary content transfer encoding when displaying mails