Add a title to the mirador icon

[cbeer]

Fixes #2934

[codecov-io]

Codecov Report

Merging #3011 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3011   +/-   ##
=======================================
  Coverage   93.01%   93.01%           
=======================================
  Files         167      167           
  Lines        2705     2705           
=======================================
  Hits         2516     2516           
  Misses        189      189           

Impacted Files	Coverage Δ
src/components/icons/MiradorIcon.js	0.00% <ø> (ø)

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[mejackreed]

Could we provide a titleAccess prop to the SvgIcon component instead where we use that? That way this Icon could be reusable without having to carry this title in the svg?

https://material-ui.com/api/svg-icon/#props

[mejackreed]

👍