Updating 'svgo' to v2.8.0 and newest Wikimedia SVG guidelines – mainly around new whitespace features of SVGO. Change-Id: Ie48f5e78b3f9b6e7f01b65618c1d6089fa4a2f54
SVGO v2.x changed configuration to JS, amending configuration. Also re-crushing SVGs. Change-Id: Id6379e06e6aa1c25760f8489166d354fca25cd52