RK-J

DT-Book is one in which source pages are initially split by default at tags such as dt (The <dt> tag defines a term/name in a description list. The <dt> tag is used in conjunction with <dl> (defines a description list) and <dd> (describes each term/name).) A non-DT book is one in which source pages are split using h tags.

DT books are useful for booklet use case and non-DT books are useful for 'annotated documentation' use case.

So, both versions will be ingested. Other requirements:
- link update should work within DT or non-DT books. Meaning that DT books should connect to only DT books. Similarly, non-DT books should connect to only non-DT books.
- remove search bar on booklet page
- on document pages, search should include only non-DT books.