Fixed transposition error.

database.py

@@ -43,12 +43,12 @@ class Person(Persisted):
     # Note that all of these conditions are written in terms of classes, OO fields, and Python operators, not tables,
     # DB fields, or SQL operators.
     reviewers = relationship('Person', uselist=True, secondary='reviewerships',
-                             primaryjoin='Reviewership.reviewer_id == Person.person_id',
-                             secondaryjoin='Reviewership.reviewee_id == Person.person_id',
-                             back_populates='reviewees')
-    reviewees = relationship('Person', uselist=True, secondary='reviewerships',
                              primaryjoin='Reviewership.reviewee_id == Person.person_id',
                              secondaryjoin='Reviewership.reviewer_id == Person.person_id',
+                             back_populates='reviewees')
+    reviewees = relationship('Person', uselist=True, secondary='reviewerships',
+                             primaryjoin='Reviewership.reviewer_id == Person.person_id',
+                             secondaryjoin='Reviewership.reviewee_id == Person.person_id',
                              back_populates='reviewers')
     # If we want to be able to access the join table's pairs themselves, we write a standard one-to-many relationship
     # with extra information.