Merge branch 'release_5_2_0' into 'master'

CRM/CiviMobileAPI/Api/CiviMobileAgendaConfig/Create.php

CRM/CiviMobileAPI/Api/CiviMobileAgendaConfig/Get.php

CRM/CiviMobileAPI/Api/CiviMobileEventSession/Create.php

CRM/CiviMobileAPI/Api/CiviMobileEventSession/Get.php

CRM/CiviMobileAPI/Api/CiviMobilePublicParticipant/Create.php

CRM/CiviMobileAPI/Api/CiviMobileSpeaker/Get.php

CRM/CiviMobileAPI/Api/CiviMobileVenue/Create.php

CRM/CiviMobileAPI/BAO/AgendaConfig.php

CRM/CiviMobileAPI/BAO/EventSession.php

CRM/CiviMobileAPI/BAO/EventSessionSpeaker.php

CRM/CiviMobileAPI/BAO/EventSessionVenue.php

CRM/CiviMobileAPI/BAO/FavouriteEventSession.php

CRM/CiviMobileAPI/BAO/LocationVenue.php

CRM/CiviMobileAPI/BAO/PushNotificationMessages.php

CRM/CiviMobileAPI/Calendar/Handler.php

CRM/CiviMobileAPI/DAO/AgendaConfig.php

CRM/CiviMobileAPI/DAO/EventSession.php

CRM/CiviMobileAPI/DAO/EventSessionSpeaker.php

CRM/CiviMobileAPI/DAO/EventSessionVenue.php

CRM/CiviMobileAPI/DAO/FavouriteEventSession.php