CLC-3410 Move CalLink proxy files to new models dir
CLC-3410 Rename CalLinkMembershipsProxy->Memberships and CalLinkOrganizationProxy->Organization
CLC-3410 Put CalLink proxies into CalLink module
CLC-3410 Rename CalLinkProxy->Proxy
Merge pull request #2227 from ctweney/clc-3410-2

CLC-3410 Second batch of proxy reorg: CalLink