ENH: Add custom tsquery from websearch function and related tests (#838) #2146

Job	Run time
build_neurostore	51s
clean (neurosynth_compose)	3s
build_neurosynth_compose	34s
clean (compose_nginx)	1s
clean (compose_pgsql)	2s
style_check	13s
clean (compose_worker)	2s
clean (neurostore)	3s
clean (store_nginx)	3s
clean (store_pgsql)	7s
neurosynth_compose_JUNIT_tests	3m 33s
neurosynth_compose_backend_tests	2m 38s
neurostore_backend_tests	3m 18s
neurosynth_compose_cypress_tests	5m 51s
	17m 19s

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