Instructions and templates to configure multi-tenant installation

[petrkalina]

see: Add Additional Tenant in Multi-Tenant Environment

related to https://github.com/j4care/dcm4chee-arc-light-pro-issues/issues/13

[petrkalina]

Open points:

• [x] add support for storage/retrieve cache
• [x] add support ATS prefetch
• [x] add steps and templates to configure storage/retrieve cache storage for tenants - Add Storage/Retrieve Cache Storage for the Tenant
• [x] arc - use Worklist Label associated with the related AET in MWL items crated by MWL RS (https://github.com/dcm4che/dcm4chee-arc-light/issues/4461)
• [x] arc - AET capabilities are repeated in config for each tenant
• [x] arc - Patient tab support for access control - RS support for applying ACID for patient queries when "only with studies" is checked in the UI
• [x] UI - Patient tab support for access control - optionally permanently check "only with studies" (i.e. optionally prevent user from doing queries without this parameter from the UI)
• [x] UI - arc device config is downloaded 4 times on reload of page, 2 times for each switch of tab
• [x] UI - show all exporters/queues in case no tenant config is defined (i.e. for admin or user users whe config is defined for other tenants)
• [x] Support two-site and two-site with traefik installations
• [ ] #13