Added to content type for case studies.
Added profile for study type.
Cleaned up the allowed types in the setup files.
Added to content type for case studies.
Included Study type to allow multiple case studies.
Changed filter of content types on Tool to allow Plone default types.
Added call_to_action, action_label, and action_link fields to the Tool
schema to support Call to Action section. Modified toolview.pt to support
the new fields.