ND2: one more set of dimension parsing fixes

This should fix QA 9427 and 9430; both sets of files should now open as they do in NIS Elements Viewer.

The primary changes are to allow dimensions in a TextInfo block to be ignored when multiple blocks are present and to detect dimensions when the Element language was set to German instead of English.  We may run into similar issues if some other language is specified, but I don't have a full version of Elements to know what all of the available language options are (and haven't been able to find a list in relevant user manuals).