Rename date facet #742

Job	Run time
Test Manuals Publisher / Run RSpec	1m 36s
Test Publisher / Run Minitest	7m 56s
Test Search Admin / Run RSpec	54s
Test Search API / Run RSpec	1m 32s
Test Service Manual Publisher / Run RSpec	1m 51s
Test Short URL Manager / Run RSpec	44s
Test Smart Answers / Run Minitest	1m 43s
Test Specialist Publisher / Run RSpec	2m 16s
Test Travel Advice Publisher / Run RSpec	1m 17s
Test Whitehall / minitest-matrix (4, 0)	3m 3s
Test Whitehall / minitest-matrix (4, 1)	2m 28s
Test Whitehall / minitest-matrix (4, 2)	2m 34s
Test Whitehall / minitest-matrix (4, 3)	2m 40s
Test Whitehall / Run Minitest	1s
	30m 35s

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