[meta] compose html consistently in tests and demos

[Rawld Gill]

This is a global ticket for stylistic changes made to html resources so they conform to the community guidelines as they evolve. Current guidelines:

• link elements should be closed with /> (as per weekly meeting 3 NOV 2010).

[Rawld Gill]

(In [23094]) added closing of link elements, !strict, refs #11916

[bill]

See also #11755.

[dylan]

Given the move away from XHTML, I would say this is no longer the preferred approach (the closing /> ).

Given that nothing else has been done with this ticket, I'm inclined to close it.

That said, if it is useful, we should note the following:

• html5 doctype
• meta tag for language
• don't use type for css or javascript (no longer needed)
• use a consistent approach to config
• put dojo.js at the end of the body

Keep this open, or close it out?

[bill]

Makes sense to me to close it.