AUI-894 Update demo to reveal innerHTML bug.

Conflicts:
	demos/parse-content/index.html
AUI-894 Add valid non-empty tag, to avoid innerHTLM bug.
AUI-894 - Source formatting
AUI-894 - Updated demos

Conflicts:
	demos/parse-content/assets/blank-content-script.html
	demos/parse-content/index.html
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