add switch_tab convenience method which waits for all ajax calls to finish
use new switch_tab method in biodiverse page helper
don't use from import *
fix biodiverse test assertions
select correct element when picking a threshold value in biodiverse configuration tab
avoid race condition when experiment finishes and page javascript reloads the page
another fix in biodiverse result assertions
assert that cta_1km fails and add another cta_1km test that finishes successfully