Invalid test cases in v2.1 w.r.t. Comment

[thbeu]

The following test cases in the release_2_1 branch violate the markup.xsd because of the missing Comment element inside Comment. Additionally, they do not seem proper elements of v2.1 at all due to legacy elements VerbalStatus, Status and Topic.

BCF-XML/Test Cases/v2.1/Visualization/Single visible space/unzipped/a3befb7d-8395-4e52-bbca-382fc4198217/markup.bcf

Lines 11 to 17 in d67e2a1

	<Comment Guid="a6d6a846-4bdf-497f-a0a1-a4049ccdd6eb">
	<VerbalStatus>Open</VerbalStatus>
	<Status>Error</Status>
	<Date>2017-05-23T08:34:51.230Z</Date>
	<Author>jon.anders.sollien@catenda.no</Author>
	<Topic Guid="a3befb7d-8395-4e52-bbca-382fc4198217"/>
	</Comment>

BCF-XML/Test Cases/v2.1/Visualization/Single visible wall/unzipped/d029895e-2bdc-4f48-8bf4-8e540425f238/markup.bcf

Lines 12 to 18 in d67e2a1

	<Comment Guid="6c265117-83fd-4850-b576-41502463a8f7">
	<VerbalStatus>Open</VerbalStatus>
	<Status>Error</Status>
	<Date>2017-05-23T09:29:22.284Z</Date>
	<Author>jon.anders.sollien@catenda.no</Author>
	<Topic Guid="d029895e-2bdc-4f48-8bf4-8e540425f238"/>
	</Comment>

BCF-XML/Test Cases/v2.1/Visualization/single invisible wall/Unzipped/e1fff3a6-db0f-48e8-a240-0e2f38b2fc21/markup.bcf

Lines 11 to 17 in d67e2a1

	<Comment Guid="4ad2c5e2-f7f1-4b6f-a2c7-5b4f93895e8e">
	<VerbalStatus>Open</VerbalStatus>
	<Status>Error</Status>
	<Date>2017-05-22T09:48:06.902Z</Date>
	<Author>jon.anders.sollien@catenda.no</Author>
	<Topic Guid="e1fff3a6-db0f-48e8-a240-0e2f38b2fc21"/>
	</Comment>

BCF-XML/Test Cases/v2.1/Visualization/all components and spaces visible/unzipped/2c02d25f-6cb7-4c14-8737-9c340699d351/markup.bcf

Lines 11 to 17 in d67e2a1

	<Comment Guid="82575370-2b8a-4731-a9d9-960b6da7e5fd">
	<VerbalStatus>Open</VerbalStatus>
	<Status>Error</Status>
	<Date>2017-05-23T07:47:09.405Z</Date>
	<Author>jon.anders.sollien@catenda.no</Author>
	<Topic Guid="2c02d25f-6cb7-4c14-8737-9c340699d351"/>
	</Comment>