Clarify access restrictions

What does this MR do?

The current wording is ambiguous for external user's access restrictions:

Can only access public projects and projects to which they are explicitly granted access, thus hiding all other internal or private ones from them (like being logged out).

This can mean 2 different things:

• Can only access [public projects and projects] to which they are explicitly granted access

OR

• Can only access [public projects] and [projects to which they are explicitly granted access]

I have seperated the 2 clauses to make it less ambiguous.

Related issues

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