Update swim lane diagrams to clarify distinctions between them

[nathanbunker]

http://jira.hl7.org/browse/fhir-24957
Section 3.4 and 3.5 seem to be describing the same use case (with 3.4 being a more specific scenario) so condense into one use case

The use cases given for 3.4 and 3.5 seem to be largely the same scenario but with section 3.4 being a more specific case of section 3.5. Perhaps consider condensing this into a single section.

Eric - I see these as different, and have a thought on how we can separate them better. One uses HL7 v2 Query and the other does not, but since both have 3 swim lanes and similar colors, the reader scans them and assumes they are the same. I think a 4th swim lane in the EHR example will help.

Proposed Disposition: Persuasive with Mod - we think it's important to keep them as separate use cases, but we'll enhance the swim lane diagrams to clarify the distinctions between them.