The header rollout of Big Picture's header-button form. UPG-100's header
now carries a rounded-square info button to the left of a rounded-square
Share (MapInfoButton + ShareButton with shape="rounded-square", the
vertical tabs' radius, Big Picture's .rd-header-btns metrics), replacing
the round Share and the floating round info button. The tab's MapInfo
takes the header button as its trigger (tabInfo 'upg-100'
trigger:'control'), so the floating one stays off while the header one
shows, and a tap on it opens the panel.
On a phone the centred view switcher and two buttons do not share the
row, so below 481px the switcher moves to the start and the buttons keep
the end. Desktop keeps the switcher centred. Rebuilt: my-upg-100-list,
doxa-maps-spa; the tree and SRI regenerated.
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