Moved GetLockedCount() and GetLockedTicketIDs from Kernel::System::User to Kernel::System::Ticket. Moved GetLastCustomerArticle() from Kernel::System::Ticket to Kernel::System::Article.
Moved GetLockedCount() and GetLockedTicketIDs from Kernel::System::User to Kernel::System::Ticket. Moved GetLastCustomerArticle() from Kernel::System::Ticket to Kernel::System::Article.

djoudi/otrs-gitimport-test,djoudi/otrs-gitimport-test,djoudi/otrs-gitimport-test