Assert the exocrine pancreas to be part of the digestive system (#3227)

* Assert the exocrine pancreas to be part of the digestive system

* UBERON:0001007 'exocrine pancreas'

Fix #3208

* Restore uberon-edit.obo from master branch

* Reimplement assertion that pancreas is part of the digestive system

src/ontology/uberon-edit.obo

@@ -765,6 +765,7 @@ relationship: contributes_to_morphology_of UBERON:0001264 ! pancreas
 relationship: develops_from UBERON:0003924 ! ventral pancreatic bud
 relationship: has_part UBERON:0001263 ! pancreatic acinus
 relationship: has_part UBERON:0007329 ! pancreatic duct
+relationship: part_of UBERON:0001007 ! digestive system
 relationship: part_of UBERON:0001264 ! pancreas
 relationship: part_of UBERON:0002330 ! exocrine system
 property_value: external_definition "The exocrine pancreas is composed of acinar epithelial cells and ductal epithelium that manufacture the proteolytic enzymes and bicarbonate required for digestion.[TAO]" xsd:string {date_retrieved="2012-08-14", external_class="TAO:0001249", ontology="TAO", source="ZFIN:curator"}
@@ -72997,8 +72998,8 @@ id: UBERON:0003532
 name: hindlimb skin
 def: "A zone of skin that is part of a hindlimb [Automatically generated definition]." [OBOL:automatic]
 synonym: "hind limb skin" EXACT [OBOL:automatic]
-synonym: "lower limb skin" EXACT [https://orcid.org/0000-0002-0819-0473]
 synonym: "lower limb skin" EXACT [FMA:23102]
+synonym: "lower limb skin" EXACT [https://orcid.org/0000-0002-0819-0473]
 synonym: "skin of hind limb" EXACT [OBOL:automatic]
 synonym: "skin of hindlimb" EXACT [OBOL:automatic]
 synonym: "skin of lower extremity" EXACT [OBOL:automatic]