introducing the general notion of a  and applying it to name part
introducing the fact qualifier
simpler confidence levels
multimedia link reset: using SourceReference, SourceDescription types
adding language to support the notion of a 'primary' media reference (e.g. 'head shot')
Merge branch 'fact-qualifiers'
Merge branch 'multimedia-links'

Conflicts:
	specifications/conceptual-model-specification.md
Merge branch 'simpler-confidence-levels'
Merge branch 'tmp-citetmpl-doc' into citation-template-doc-update