When adding a relation, the service menu is shown.
If adding a relation using the 'Build Relation' action from the service menu on the originating service, the click on the target service produces two events. The dragend event is handled properly and sets up the relation. Then the click event calls serviceClick.
Attempts to use the stopPropagation, stopEvent, and preventDefault methods on the d3.event did not produce the desired results.
This work-around is pretty hacky but it does work. A more general solution should be found.
Also, attempts to change the test 'must be able to add a relation from the service menu' to simulate the click events and ensure the service menu was not left displayed did not work.
This branch is submitted as is in an attempt to finish the last card blocking the charm announcement.