Failing tests and what was fixed:
1. Sidebar was not closing when the user taps or clicks in the page.
	- Function that set up event handlers used to be called by the `Annotator` base class, now called directly in `Sidebar`
2. Config params used in the passed options to the sidebar iframe leaked a new property (`pluginClasses`) used by the refactoring
	- Filter that property in `Host`
3. `Guest` was missing `deleteAnnotation` function implementation that used to be in `Annotator`

Now only 2 tests should be failing