Add support for rendering of the FCP Approved Specification icon

[reubendaniels]

If the IG’s ImplementationGuide resource includes the fcp-approved-specification Boolean parameter with a value of ‘true’ as follows:

<parameter>
    <code>
        <system value=http://hl7.org/fhir/tools/CodeSystem/ig-parameters/>
        <code value="fcp-approved-specification"/>
    </code>
    <value value="true"/>
</parameter>

then the IG Publisher will render the FCP Approved Specification icon

in the top banner. The screenshot below demonstrates this:

[lmckenzi]

We only want this enabled when it's a non-HL7 published IG. Should spit out a warning if it appears in anything derived from the HL7 international template.

Question: Should this be a registered trade mark (at least in the US)? Also, no "(R)" is on the FHIR flame, and there should be.
Should this hyperlink to a registry? to a website? If so, where?

[ElliotSilver]

Is there a way we provide some level of assurance that only authorized IGs use this icon?