Use Selection Tags to create a button bar

Illustrates how to use selection tags as buttons. This is a lot nicer than rolling my own button bar using buttons and repeaters because Wix determines the width of each chip based on its own contents.

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All of the buttons on my hand rolled button bar had to be the same width. This was really ugly when (for example) the buttons were a single alphabetical letter, but a few of them were botanic name groups (like Ceanothus).