python: Sort imports in smaller apps.

analytics/migrations/0001_initial.py

@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
-from django.db import models, migrations
 import django.db.models.deletion
 from django.conf import settings
-import zerver.lib.str_utils
+from django.db import migrations, models
 
+import zerver.lib.str_utils
 
 class Migration(migrations.Migration):
 

analytics/migrations/0002_remove_huddlecount.py

@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 from django.db import migrations, models
 
-
 class Migration(migrations.Migration):
 
     dependencies = [

analytics/migrations/0003_fillstate.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 from django.db import migrations, models
-import zerver.lib.str_utils
 
+import zerver.lib.str_utils
 
 class Migration(migrations.Migration):
 

analytics/migrations/0004_add_subgroup.py

@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 from django.db import migrations, models
 
-
 class Migration(migrations.Migration):
 
     dependencies = [

analytics/migrations/0005_alter_field_size.py

@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 from django.db import migrations, models
 
-
 class Migration(migrations.Migration):
 
     dependencies = [

analytics/migrations/0006_add_subgroup_to_unique_constraints.py

@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 from django.db import migrations, models
 
-
 class Migration(migrations.Migration):
 
     dependencies = [

analytics/migrations/0007_remove_interval.py

@@ -3,7 +3,6 @@
 from django.conf import settings
 from django.db import migrations
 
-
 class Migration(migrations.Migration):
 
     dependencies = [

analytics/migrations/0008_add_count_indexes.py

@@ -2,7 +2,6 @@
 # Generated by Django 1.10.5 on 2017-02-01 22:28
 from django.db import migrations
 
-
 class Migration(migrations.Migration):
 
     dependencies = [

analytics/migrations/0009_remove_messages_to_stream_stat.py

@@ -1,8 +1,7 @@
 # -*- coding: utf-8 -*-
+from django.db import migrations
 from django.db.backends.postgresql_psycopg2.schema import DatabaseSchemaEditor
 from django.db.migrations.state import StateApps
-from django.db import migrations
-
 
 def delete_messages_sent_to_stream_stat(apps, schema_editor):
     # type: (StateApps, DatabaseSchemaEditor) -> None

analytics/migrations/0010_clear_messages_sent_values.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
+from django.db import migrations
 from django.db.backends.postgresql_psycopg2.schema import DatabaseSchemaEditor
 from django.db.migrations.state import StateApps
-from django.db import migrations
 
 def clear_message_sent_by_message_type_values(apps, schema_editor):
     # type: (StateApps, DatabaseSchemaEditor) -> None

analytics/migrations/0011_clear_analytics_tables.py

@@ -1,8 +1,7 @@
 # -*- coding: utf-8 -*-
+from django.db import migrations
 from django.db.backends.postgresql_psycopg2.schema import DatabaseSchemaEditor
 from django.db.migrations.state import StateApps
-from django.db import migrations
-
 
 def clear_analytics_tables(apps, schema_editor):
     # type: (StateApps, DatabaseSchemaEditor) -> None