FR: expose view names

[Cammagno]

It could be useful if the view name could be exposed as an attribute value for the page-gallery__views-header-item so that could be easily addressed by CSS.
As it is now, being the view name only in the content text, the only way to address specific buttons (if I'm not missing something) is to use the nth-child(): it works, but it's boring and less flexible (I can't, for example, assign the same formatting to all the buttons whose view names contain a given word).

TIA!