Converted the service relations viewlet to a view.
Fixed failing tests from the service relations viewlet to view conversion.
Moved the remove relation event handling into the relation inspector view
Merge pull request #168 from hatched/relation-to-view

To QA
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- Deploy two relatable services.
- Open one of their inspectors to the relation tab. It should show that it has no relations.
- Create a relation, after a few seconds the relation should show up in the inspector.
- Switch to the other inspector and the relation should be there.
- Remove the relation and it should disappear from the relation list.