Adds tests for URL filtering behaviour.
Adds tests for URL filtering behaviour.

lyw07/kolibri,indirectlylit/kolibri,lyw07/kolibri,jonboiser/kolibri,lyw07/kolibri,benjaoming/kolibri,mrpau/kolibri,indirectlylit/kolibri,learningequality/kolibri,learningequality/kolibri,jonboiser/kolibri,indirectlylit/kolibri,benjaoming/kolibri,jonboiser/kolibri,mrpau/kolibri,mrpau/kolibri,DXCanas/kolibri,christianmemije/kolibri,indirectlylit/kolibri,christianmemije/kolibri,learningequality/kolibri,DXCanas/kolibri,christianmemije/kolibri,learningequality/kolibri,jonboiser/kolibri,DXCanas/kolibri,lyw07/kolibri,mrpau/kolibri,christianmemije/kolibri,benjaoming/kolibri,benjaoming/kolibri,DXCanas/kolibri