#1516: V8.0.8__RELEASE-MGC_additions.sql

Flyway migration: MGC additions. alters: t_fibu_employee, t_fibu_employee, t_orga_visitorbook_employee, t_orga_visitorbook_employee, t_user_pref_entry, t_addressbook_address, t_addressbook_address, t_employee_vacation_other_replacements, t_employee_vacation_other_replacements, t_employee_vacation_substitution, t_group_user, t_group_user, t_group_task_access_entry, t_plugin_calendar_event_attendee, t_plugin_calendar_event_attendee.

bec8f7537 V8.0.8 fixed: t_plugin_poll doesn't exist.
63cc65ae0 Flyway stuff, Employee.timed-attrs
28efde264 Employee: weeklyWorkingHours now as time-dependent attr. eintritt/austritt: timestamp -> date Drop old DB tables. in MGC release, some fk in the db were forgotten to switch type from int to bigint.