Clarify what will be lost when transferring a project
In our documentation for transferring a project:
https://docs.gitlab.com/ce/workflow/groups.html
It says "transferring a project can have unintended side effects".
At a minimum, we should clarify what those side effects are and/or solve those side effects. @connorshea identified that images won't get moved because they are namespaced. Does anyone know of any others?