Another case where
%s has been replaced manually.
To avoid that I've replace this and other occurrences with usage of
Also adjusted the transitions UI test to hover a number, so the tooltip is displayed where replacing didn't work.
Looks good, now we can even see the tooltip here again http://builds-artifacts.piwik.org/piwik/piwik/fixtransitiontranslations/18097/Transitions_transitions_popup_urls
Tested it locally and worked :+1: