AO3-6859 Fix admins being disallowed from tags pages #4873

Job	Run time
rake db:otwseed	2m 18s
rspec spec/controllers	13m 41s
rspec spec/models	6m 51s
rspec --exclude-pattern 'spec/{controllers,models}/*/.rb'	8m 16s
cucumber features/admins	7m 27s
cucumber features/bookmarks	5m 32s
cucumber features/collections	6m 41s
cucumber features/comments_and_kudos	6m 29s
cucumber features/gift_exchanges	6m 57s
cucumber features/importing	2m 43s
cucumber features/other_a	11m 3s
cucumber features/other_b	7m 56s
cucumber features/prompt_memes_a	4m 42s
cucumber features/prompt_memes_b	3m 36s
cucumber features/prompt_memes_c	5m 3s
cucumber features/search	7m 23s
cucumber features/tag_sets	3m 23s
cucumber features/tags_and_wrangling	6m 51s
cucumber features/users	5m 1s
cucumber features/works	13m 0s
	2h 14m 53s

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