Maint 853 update baner with new townhall link (#857) #2173

Job	Run time
build_neurostore	49s
clean (neurosynth_compose)	3s
build_neurosynth_compose	29s
style_check	22s
clean (compose_nginx)	2s
clean (compose_pgsql)	4s
clean (compose_worker)	2s
clean (neurostore)	2s
clean (store_nginx)	2s
clean (store_pgsql)	2s
neurosynth_compose_JUNIT_tests	3m 7s
neurosynth_compose_backend_tests	2m 14s
neurostore_backend_tests	3m 5s
neurosynth_compose_cypress_tests	8m 45s
	19m 8s

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