Party Rates - VIEW permissions

Currently, a user with only 'VIEW' permissions, as demonstrated in trunk demo with userId = auditor, accessing the Party Rates screen, sees editable fields and/or triggers (to requests) reserved for users with 'CREATE' or 'UPDATE' permissions.

To see:/test:

• for DemoEmployee (rates in demo data): https://localhost:8443/partymgr/control/EditPartyRates?partyId=DemoEmployee
• for DemoEmployee2 (after merge of PR74 in plugins): https://localhost:8443/partymgr/control/EditPartyRates?partyId=DemoEmployee2