feat(invitations) Added User registration tab

This tab flags a user as being a registration, adding it the LDAP
 objectClass fdUserRegistration

issue #5850

invitations/contrib/openldap/invitations-fd.schema

@@ -91,3 +91,8 @@ objectclass ( 1.3.6.1.4.1.38414.69.2.2 NAME 'fdRegistration'
     fdRegistrationLastChange $
     fdRegistrationInvitationDN $ fdRegistrationUserDN $
     fdRegistrationToken ) )
+
+objectclass ( 1.3.6.1.4.1.38414.69.2.3 NAME 'fdUserRegistration' SUP top AUXILIARY
+  DESC 'FusionDirectory - This class is used to flag users as registrations awaiting approval'
+  MUST (  )
+  MAY (  ) )

invitations/personal/invitations/class_userRegistration.inc

+<?php
+/*
+  This code is part of FusionDirectory (http://www.fusiondirectory.org/)
+  Copyright (C) 2017-2018  FusionDirectory
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+
+class userRegistration extends simplePlugin
+{
+  protected $displayHeader  = TRUE;
+
+  static function plInfo()
+  {
+    return array(
+      'plShortName'   => _('Registration'),
+      'plDescription' => _('User registration status'),
+      'plSmallIcon'   => '',
+      'plObjectClass' => array('fdUserRegistration'),
+      'plObjectType'  => array('user'),
+      'plSelfModify'  => FALSE,
+
+      'plProvidedAcls'  => parent::generatePlProvidedAcls(static::getAttributesInfo())
+    );
+  }
+
+  static function getAttributesInfo ()
+  {
+    return array(
+      'main' => array(
+        'name'      => _('User registration'),
+        'class'     => array('fullwidth'),
+        'attrs'     => array(
+          new DisplayAttribute(
+            '', '',
+            'msg', FALSE
+          ),
+        )
+      )
+    );
+  }
+
+  function __construct ($dn = NULL, $object = NULL, $parent = NULL, $mainTab = FALSE)
+  {
+    parent::__construct($dn, $object, $parent, $mainTab);
+
+    $this->msg = _('This user object is a registration awaiting approval');
+  }
+}