sort proteins by group ID : this fix a sort problem in the protein list with protein ranks

src/output/ods/proteinsheet.cpp

@@ -143,8 +143,8 @@ ProteinSheet::writeIdentificationGroup(IdentificationGroup *p_ident)
 
       std::sort(protein_match_list.begin(), protein_match_list.end(),
                 [](const ProteinMatch *a, const ProteinMatch *b) {
-                  return a->getGrpProteinSp().get()->getSubGroupNumber() <
-                         b->getGrpProteinSp().get()->getSubGroupNumber();
+                  return a->getGrpProteinSp().get()->getGroupingId() <
+                         b->getGrpProteinSp().get()->getGroupingId();
                 });
 
       for(auto &protein_match : protein_match_list)