Make sure the Columns block is readable by Screen Readers.

Known issues so far:

Redundant links are often used in visual design but for a SR it means a link will be read two or three times, for example, in the Icons style, the column Icon and the column Title have the same link. We should hide the icon to the SR using aria-hidden.

Tasks:

• Hide icons in the Icons style.
• Find other redundant links and preserve only the one that makes more sense in an audible flow.
• Test with a SR for other possible glitches or errors in the flow.

Find help and tips:
https://docs.google.com/document/d/1VGkZ5T_SdAfLa-KNfNJVIBiIJxItG2zbWjwqfPLFZxE/

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