AO3-6864 Disallow URLs followed by something else in CSS #4776

Job	Run time
rake db:otwseed	1m 15s
rspec spec/controllers	12m 49s
rspec spec/models	6m 43s
rspec --exclude-pattern 'spec/{controllers,models}/*/.rb'	7m 54s
cucumber features/admins	6m 17s
cucumber features/bookmarks	4m 39s
cucumber features/collections	6m 5s
cucumber features/comments_and_kudos	7m 16s
cucumber features/gift_exchanges	6m 43s
cucumber features/importing	4m 37s
cucumber features/other_a	11m 46s
cucumber features/other_b	7m 16s
cucumber features/prompt_memes_a	3m 58s
cucumber features/prompt_memes_b	3m 35s
cucumber features/prompt_memes_c	4m 52s
cucumber features/search	6m 12s
cucumber features/tag_sets	3m 5s
cucumber features/tags_and_wrangling	6m 40s
cucumber features/users	6m 9s
cucumber features/works	13m 17s
	2h 11m 8s

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