Project registration must allow the user to disown the project

Users often register upstream projects to enable one serivce, such as code imports or translations. Since these users are not Ubuntu community users, they will not discover they can register a project they do not own from Ubuntu contexts.

The form could ask the user at the start of end of the registration process if he will be the maintainer in launchpad. If he is not, the project will be given to registry admins. I think asking at the start is bet because it allows us to ask the intent the the registration. When the intent is to translate, we want to communicate that the user should find an existing project instead of wrongly registering a project for that language. This could also solve the test problem too.