Restructure part 9 (#4298)

* Move dual to top of part 9

* remove redundant $d for oduglb and odulat

* rename: posglbd -> posglbdg

* rename: posglbd -> posglbdg (changes-set.txt)

* toInc to after dlat; add tosets section

* latmass to latdisd -> lattice section

* add Complete lattices section

* latmass to latdisd -> lattice section (before clat)

* add explanations for lattices as relations

* reverse order for join0 and meet0 and for odu*, for consistency

Author: zwang123

changes-set.txt

@@ -95,6 +95,7 @@ make a github issue.)
 
 DONE:
 Date      Old       New         Notes
+17-Oct-24 posglbd   posglbdg    compare to poslubdg
 15-Oct-24 ---       ---         well-founded induction theorems moved
                                 from SF's mathbox to main set.mm
 12-Oct-24 syl5rbb   bitr2id     compare to bitr2i or bitr2d