django-admin: add page (#4066)

Co-authored-by: Zlatan Vasović <zlatanvasovic@gmail.com>
Co-authored-by: Lucas Gabriel Schneider <casdpa@gmail.com>

pages/common/django-admin.md

@@ -0,0 +1,20 @@
+# django-admin
+
+> Django’s utility for administrative tasks.
+> More information: <https://docs.djangoproject.com/en/3.0/ref/django-admin/>.
+
+- Create a new django project:
+
+`django-admin startproject {{project_name}}`
+
+- Create a new app for the current project:
+
+`django-admin startapp {{app_name}}`
+
+- Check the current version of Django:
+
+`django-admin --version`
+
+- Display more information for the given command:
+
+`django-admin help {{command}}`