Patrick H. Lauke 816d5bd2e3 Docs: accessibility and IE fixes for SVG-based top navigation (#22848) ...

* Add explicit aria-label attributes to <svg> based links

As some browser/AT combinations don't seem to fully support grabbing the
`<title>` from inside the `<svg>` as the link text/name to announce
(e.g. Firefox+NVDA)

* Add <title> to Bootstrap logo <svg>

* Add <title> to menu <svg>

* Add explicit focusable="false" to <svg> icons

Due to a bug/"feature" in IE, `<svg>` elements are usually separately
focusable, which then results in links with `<svg>` icons being
essentially focused twice (once for the link, and once for the `<svg>`
inside, which is then also non-interactive)

2017-06-17 15:07:49 +02:00

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