Added the ability to add a reference image to a person, and connect the two in the db

refimg.py

@@ -16,6 +16,14 @@ class Refimg(db.Model):
 
     def __repr__(self):
         return "<id: {}, fname: {}>".format(self.id, self.fname )
+        
+class Person_Refimg_Link(db.Model):
+    __tablename__ = "person_refimg_link"
+    person_id = db.Column(db.Integer, db.ForeignKey('person.id'), unique=True, nullable=False, primary_key=True)
+    refimg_id = db.Column(db.Integer, db.ForeignKey('refimg.id'), unique=True, nullable=False, primary_key=True)
+
+    def __repr__(self):
+        return "<person_id: {}, refimg_id>".format(self.person_id, self.refimg_id)
 
 ################################################################################
 # Helper class that inherits a .dump() method to turn class Refimg into json / useful in jinja2