Merge pull request #5946 from JonnyTischbein/move_include_security

Move and Split include/security

diff --cc mod/admin.php
Simple merge

diff --cc mod/community.php
Simple merge

diff --cc mod/invite.php
Simple merge

diff --cc mod/item.php
Simple merge

diff --cc mod/register.php
Simple merge

diff --cc src/Model/Item.php
Simple merge