Tweak Django tutorial to remove form approach

[luabud]

This was suggested by @dawnwages on microsoft/vscode-docs#6410

Suggestion: In order to include admin.py and createsuperuser I would remove the form.py approach which isn't gone into detail much, and instead:

• create superuser
• check admin
• go to terminal from hello.models import LogMessage
• check all messages all_messages = LogMessage.objects.all() and perhaps test methods on query string like .all(), .last(), .create() eg. m = LogMessage.create(field1='result', field2='result') m.save() then check admin again.
• .filter() and view on your template.
• bonus points for if we can show off some type of UI in the template to inspect those variables.