clean and fix


git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@21859 35612d4c-9d10-0410-837c-bf9dd1be60d7
#4385: link_ticket


git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@21860 35612d4c-9d10-0410-837c-bf9dd1be60d7
CS + minor fix

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@21861 35612d4c-9d10-0410-837c-bf9dd1be60d7
#4385: TicketFollowup:add_followup


git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@21862 35612d4c-9d10-0410-837c-bf9dd1be60d7
#4385: TicketValidation:submit_validation + TODO about missing method (since r21827)


git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@21863 35612d4c-9d10-0410-837c-bf9dd1be60d7