FHIR-25758 Add document context to patient-view

[dennispatterson]

https://jira.hl7.org/browse/FHIR-25758

Added a header to patient-view, as well as to the hook template. Once we agree on wording, it can be propagated to other hook pages.

[isaacvetter]

Update jiras to show change applied:

• [x] FHIR-25758
• [x] FHIR-25749
• [x] FHIR-25752
• [x] FHIR-25754
• [x] FHIR-25753
• [x] FHIR-25770
• [x] FHIR-25765
• [x] FHIR-25751