[2.2.x] Changed tuple Mate.unique_together/permissions to lists in docs.

Backport of 0c91625 from master

docs/ref/models/options.txt

@@ -309,7 +309,7 @@ Django quotes column and table names behind the scenes.
     Add, change, delete, and view permissions are automatically created for each
     model. This example specifies an extra permission, ``can_deliver_pizzas``::
 
-        permissions = (("can_deliver_pizzas", "Can deliver pizzas"),)
+        permissions = [('can_deliver_pizzas', 'Can deliver pizzas')]
 
     This is a list or tuple of 2-tuples in the format ``(permission_code,
     human_readable_permission_name)``.
@@ -412,17 +412,17 @@ Django quotes column and table names behind the scenes.
 
     Sets of field names that, taken together, must be unique::
 
-        unique_together = (("driver", "restaurant"),)
+        unique_together = [['driver', 'restaurant']]
 
-    This is a tuple of tuples that must be unique when considered together.
+    This is a list of lists that must be unique when considered together.
     It's used in the Django admin and is enforced at the database level (i.e., the
     appropriate ``UNIQUE`` statements are included in the ``CREATE TABLE``
     statement).
 
-    For convenience, unique_together can be a single tuple when dealing with a single
-    set of fields::
+    For convenience, ``unique_together`` can be a single list when dealing with
+    a single set of fields::
 
-        unique_together = ("driver", "restaurant")
+        unique_together = ['driver', 'restaurant']
 
     A :class:`~django.db.models.ManyToManyField` cannot be included in
     unique_together. (It's not clear what that would even mean!) If you

docs/topics/auth/customizing.txt

@@ -277,10 +277,10 @@ can or cannot do with ``Task`` instances, specific to your application::
     class Task(models.Model):
         ...
         class Meta:
-            permissions = (
+            permissions = [
                 ("change_task_status", "Can change the status of tasks"),
                 ("close_task", "Can remove a task by setting its status as closed"),
-            )
+            ]
 
 The only thing this does is create those extra permissions when you run
 :djadmin:`manage.py migrate <migrate>` (the function that creates permissions

docs/topics/auth/default.txt

@@ -328,12 +328,12 @@ inherit the permissions of the concrete model they subclass::
 
     class Person(models.Model):
         class Meta:
-            permissions = (('can_eat_pizzas', 'Can eat pizzas'),)
+            permissions = [('can_eat_pizzas', 'Can eat pizzas')]
 
     class Student(Person):
         class Meta:
             proxy = True
-            permissions = (('can_deliver_pizzas', 'Can deliver pizzas'),)
+            permissions = [('can_deliver_pizzas', 'Can deliver pizzas')]
 
     >>> # Fetch the content type for the proxy model.
     >>> content_type = ContentType.objects.get_for_model(Student, for_concrete_model=False)

docs/topics/serialization.txt

@@ -367,7 +367,7 @@ Consider the following two models::
         birthdate = models.DateField()
 
         class Meta:
-            unique_together = (('first_name', 'last_name'),)
+            unique_together = [['first_name', 'last_name']]
 
     class Book(models.Model):
         name = models.CharField(max_length=100)
@@ -411,7 +411,7 @@ name::
         objects = PersonManager()
 
         class Meta:
-            unique_together = (('first_name', 'last_name'),)
+            unique_together = [['first_name', 'last_name']]
 
 Now books can use that natural key to refer to ``Person`` objects::
 
@@ -459,7 +459,7 @@ Firstly, you need to add another method -- this time to the model itself::
         objects = PersonManager()
 
         class Meta:
-            unique_together = (('first_name', 'last_name'),)
+            unique_together = [['first_name', 'last_name']]
 
         def natural_key(self):
             return (self.first_name, self.last_name)