Issue #2405057 by nlisgo, Manjit.Singh, ctraltdel, madhavvyas, avitslv, LewisNyman, emma.maria, joelpittet, dernetzjaeger, wmortada, karolus, cilefen, Noe_, davidhernandez, idebr: Replace arrow-asc and arrow-desc images with Libricons and implement using CSS

Issue #2510794 by ShaunDychko, Arnion, davidhernandez, andypost, Chernous_dn, Manuel Garcia, th3m0d, karolus: Remove unnecessary markup from views-view.html.twig

Issue #2498599 by Cottser, naveenvalecha, webchick, karolus, cilefen: Remove sdboyer/gliph since it is unused by core

Issue #2217731 by crowdcg, lauriii, davidhernandez, aczietlow, jjcarrion, mortendk, karolus, pakmanlh, LewisNyman, aboros, joshua.boltz: Move field classes out of preprocess and into templates