Set up teams app: create app structure, register in settings, and update base template formatting.

teams/admin.py

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+from django.contrib import admin
+
+# Register your models here.

teams/apps.py

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+from django.apps import AppConfig
+
+
+class TeamsConfig(AppConfig):
+    name = "teams"

teams/models.py

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+from django.db import models
+
+# Create your models here.

teams/tests.py

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+from django.test import TestCase
+
+# Create your tests here.