AO3-6859 Fix admins being disallowed from tags pages #4806

Job	Run time
rake db:otwseed	1m 10s
rspec spec/controllers	13m 15s
rspec spec/models	5m 45s
rspec --exclude-pattern 'spec/{controllers,models}/*/.rb'	8m 4s
cucumber features/admins	7m 0s
cucumber features/bookmarks	5m 1s
cucumber features/collections	6m 22s
cucumber features/comments_and_kudos	6m 40s
cucumber features/gift_exchanges	7m 2s
cucumber features/importing	2m 40s
cucumber features/other_a	10m 52s
cucumber features/other_b	7m 9s
cucumber features/prompt_memes_a	3m 51s
cucumber features/prompt_memes_b	3m 41s
cucumber features/prompt_memes_c	4m 45s
cucumber features/search	6m 31s
cucumber features/tag_sets	3m 45s
cucumber features/tags_and_wrangling	6m 40s
cucumber features/users	4m 56s
cucumber features/works	12m 19s
	2h 7m 28s

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