This change removes the obsolete project member paging code.
Previously, we implemented functionality for including project
invitations in pages of project members. However, the satellite
frontend still expected API responses to use the old paging style, so
the related code could not be removed right away. Now that the frontend
has been updated, this code is no longer necessary.
References #5855
Change-Id: I12fdaaeb869977c4d87a0d50b9a7b11c68552c82
Project member invitations may now be requested through GraphQL
queries. This is necessary for the satellite frontend to display
invitations in the Team page.
References #5855
Change-Id: Ibc8526ba768fd82c1b1890201004ef0f066df2fc
