Add columns to store project creation settings
Add project creation level column in groups
and default project creation column in application settings
Remove obsolete line from schema
Update migration with project_creation_level column existence check
Rename migrations to avoid conflicts
Update migration methods
Update migration method
So the fake can enjoy it, too. We don't use `prepend`
because that'll require we change `allow_any_instance_of` to
`expect_next_instance_of`, but that's not very easy to do.
We can do that later.
