Contact View and Edit Screens can be customized by contact sub-types

We need the ability to over-ride the default view and edit templates for contacts to support use cases like Quest - Student, Jurisdiction, etc.

A new column has been added to civicrm_contact - contact_sub_type - which will allow this over-ride.

The rule for determining which template to render for "view" is:

• If contact_sub_type NOT NULL - check for $contact_sub_type.tpl in Contact/Page/View.
• If not present, check for $contact_type.tpl
• If not present, use Basic.tpl

Rule for which template to use for "edit" is similar (except default is Edit.tpl)

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Adding new contact records for a contact sub type
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We also need to provide a mechanism for creating NEW records of a given contact_sub_type. For this version, folks who want to link to "Add..." form for a contact_sub_type (that has a custom template) will do this by adding cst=$contact_sub_type to the query string.

Example: If I want to use a contact_sub_type called "Jurisdiction" which is a sub-type of "Organization", I would create the following templates:

• templates/CRM/Contact/Form/Jurisdiction.tpl
• templates/CRM/Contact/Page/View/Jurisdiction.tpl

... and I would invoke "New Jurisdiction" with the following link: <cms_URL>/civicrm/contact/add?ct=Organization&cst=Jurisdiction

Coding Tasks:
1. Add logic to check for both ct=(Individual, Organization or Household) & cst=(string) in query string when invoke path is civicrm/contact/add
2. If found, validate that cst value IS a string and is "safe" and is 64 char or less (length of civicrm_contact.contact_sub_type column)
3. If valid, check for corresonding "edit template" file - e.g. templates/CRM/Contact/Form/$contact_sub_type.tpl
4. If custom template found, invoke requested Form class (e.g. "Individual", "Organization"...) but with customized sub-type template.
5. Also, modify setTitle in Contact/Form/Edit.php to use contact_sub_type in title (e.g. "New Jurisdiction" appears at top of page).
6. If no custom template found (in expected path/name) - then just invoke standard form/tpl for the passed contact type (ct=)