New changes:
6515e03e1 ve.ce.Surface: Rearrange #findBlockSlug test to check other cases
cbfdc8570 Localisation updates from https://translatewiki.net.
708ba0557 Prevent block slugs from overlapping floated elements
3703fd66d Separate the concept of a document node and a root node in CSS
Bug: T211844
Change-Id: Ia86cf9b23e561d3c32601d41c1bc5a9824e9953c