feat(AlertController): put new features on the subway alerts page #6089

Job	Run time
file_changes	4s
Build application and assets	26s
Build Docker image	36s
Formatting / JavaScript & TypeScript	11s
Linting / TypeScript	11s
Linting / Elixir	11s
Formatting / Elixir	11s
Unit tests / JavaScript & TypeScript / Jest	12s
Unit tests / JavaScript / Mocha	12s
Linting / JavaScript	12s
Linting / CSS	11s
Type checks / Elixir	11s
Type checks / TypeScript	11s
Unit tests / Elixir / mix coveralls.html	1s
	3m 0s

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