Set version back to 5.0a11, it was never released

Remove extra dot in example integration code

README.rst

@@ -33,7 +33,7 @@ Installation
      .. code-block:: bash
 
         INSTALLED_APPS = [
-            ....
+            ...
 
             'django.contrib.postgres',
             'localized_fields.apps.LocalizedFieldsConfig'
@@ -279,7 +279,7 @@ Besides ``LocalizedField``, there's also:
 
     Allows storing integers in multiple languages. This works exactly like ``LocalizedField`` except that
     all values must be integers. Do note that values are stored as strings in your database because
-    the backing field type is ``hstore``, which only allows storing integers. The ``LocalizedIntegerField``
+    the backing field type is ``hstore``, which only allows storing strings. The ``LocalizedIntegerField``
     takes care of ensuring that all values are integers and converts the stored strings back to integers
     when retrieving them from the database. Do not expect to be able to do queries such as:
 
@@ -369,6 +369,10 @@ To enable widgets in the admin, you need to inherit from ``LocalizedFieldsAdminM
     admin.site.register(MyLocalizedModel, MyLocalizedModelAdmin)
 
 
+.. image:: ./images/admin-widget.png
+    :alt: The appearance of admin widget
+
+
 Frequently asked questions (FAQ)
 --------------------------------
 

localized_fields/admin.py

@@ -22,6 +22,7 @@ class LocalizedFieldsAdminMixin:
         }
 
         js = (
+            'admin/js/jquery.init.js',
             'localized_fields/localized-fields-admin.js',
         )
 

localized_fields/value.py

@@ -233,4 +233,4 @@ class LocalizedIntegerValue(LocalizedValue):
         """Returns string representation of value"""
 
         value = self.translate()
-        return str(value) if value is not None else None
+        return str(value) if value is not None else ''

setup.py

@@ -33,7 +33,7 @@ with open(os.path.join(os.path.dirname(__file__), 'README.rst'), encoding='utf-8
 
 setup(
     name='django-localized-fields',
-    version='5.0a7',
+    version='5.0a11',
     packages=find_packages(exclude=['tests']),
     include_package_data=True,
     license='MIT License',
@@ -44,7 +44,7 @@ setup(
     author_email='open-source@sectorlabs.ro',
     keywords=['django', 'localized', 'language', 'models', 'fields'],
     install_requires=[
-        'django-postgres-extra>=1.21a15',
+        'django-postgres-extra>=1.22',
         'Django>=1.11',
         'deprecation==2.0.3'
     ],

tox.ini

@@ -1,11 +1,12 @@
 [tox]
-envlist = py35-dj{111,20,21}, py36-dj{111,20,21}, py37-dj{111,20,21}
+envlist = py35-dj{111,20,21,22}, py36-dj{111,20,21,22}, py37-dj{111,20,21,22}
 
 [testenv]
 deps =
     dj111: Django>=1.11,<1.12
     dj20: Django>=2.0,<2.1
     dj21: Django>=2.1,<2.2
+    dj22: Django>=2.2,<2.3
     -rrequirements/test.txt
 setenv =
     DJANGO_SETTINGS_MODULE=settings