refactored default content service to be more testable (hopefully)
introduced defaultcontent test, with first test
updated indexservice to use dependency lazy-loading
added test for execute method
continued unit tests for defaultcontent indexservice -- disabled infoboxes
added test for dom garbage removal in default content index service
finished writing tests for default content service
added support for asides in default content
Merge branch 'refactor-default-content' into dev