~ [MODULE] Changed: Improve participants total counter in module tooltip.
# [LOW][J4/J5] Fixed: Missing Notes button in admin registrations list.
# [LOW] Fixed: Current day and time control (timezone issue).
# [LOW] Fixed: Date in session for period.
# [LOW] Fixed: user_action if null.

Changed files in 3.9.9
~ com_icagenda/admin/src/Utilities/Registration/Participants.php
~ com_icagenda/admin/src/Utilities/Registration/Registration.php
~ com_icagenda/admin/tmpl/registrations/default.php
~ com_icagenda/admin/utilities/registration/participants.php
~ com_icagenda/admin/utilities/registration/registration.php
~ com_icagenda/site/models/event.php
~ com_icagenda/site/src/Model/EventModel.php
~ [MODULE] mod_iccalendar/helper.php