Split issue/pull view router function as multiple smaller functions

Author: lunny

models/issues/issue.go

@@ -302,6 +302,7 @@ func (issue *Issue) loadReactions(ctx context.Context) (err error) {
 			comment.Reactions = append(comment.Reactions, react)
 		}
 	}
+	issue.Reactions = reactions
 	return nil
 }