tests

rake task for fixing mit sample links to assays #6613

Job	Run time
Tests (mysql, rails test test/unit)	26m 25s
Tests (mysql, rails test test/functional)	34m 36s
Tests (mysql, rails test test/integration)	17m 36s
Tests (mysql, rspec spec)	3m 22s
Tests (mysql, rake assets:precompile)	3m 16s
Tests (mysql, rake db:setup)	3m 21s
Tests (mysql, rake db:migrate)	3m 39s
Tests (mysql, rake seek:upgrade)	3m 38s
Tests (sqlite3, rails test test/unit)	20m 46s
	1h 56m 39s

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