Read the content of file:///app/manage.py and summarize it

Read the content of file:​/​/​/​app/​manage.​py and summarize it
Content 1.​ Introduction 2.​ Purpose 3.​ Common Commands 4.​ Custom Management Commands 5.​ Running Server 6.​ Creating Apps 7.​ Database Migrations 8.​ Testing Framework 9.​ Shell Access 10.​ Documentation Generation