(There is be a dependency between this and SAK-10135)

Description:
Student is building a portfolio with portfolio tool in My Workspace or in any worksite (course, project, portfolio)
Student is a member of three sites, "CIG"1, "CIG2", "Course1"

In Step 3 of 3, user should be given the option to share:
- with any role in any worksite (in which they are a member)
- with any user in any worksite (in which they are a memer)
- with guest users specified by email address (existing functionality)
- with public web access (existing functionality)

Student should be able to select a group, multiple groups and / or individuals to share a portfolio.

This may require a UI change to provide the ability to drill down into a site/roles. List may become unwieldy when a student is a member of many sites.

My Workspace users should have access to global templates.

Porfolios created in My Workspace must continue to function even if the worksite containing templates/layouts is removed.