environment: profile kinds feature

This feature allows environment administrators to create custom profile kinds. These kinds are divided by profile type (Person, Community and Enterprise). Profiles can define themselves as any of the types created by the administrator on their creation or editing their informations later. If the kind is marked as "moderated", a task is created for the amidnistrator in order to approve a profile to define itself as the kind in case.

These kinds are now intended to serve as a proper profile especialization feature instead of using categories, templates or community memberships for it. They can be used as search differentiators, style customizations through added css classes and extra permissions access.