Add a "Troubleshooting" section to installation docs
Add a "Troubleshooting" section to installation docs

This section describes MIME type issues on some platforms when using the
Django runserver command.

Fixes #1352

django-debug-toolbar/django-debug-toolbar,spookylukey/django-debug-toolbar,spookylukey/django-debug-toolbar,tim-schilling/django-debug-toolbar,tim-schilling/django-debug-toolbar,jazzband/django-debug-toolbar,tim-schilling/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar,spookylukey/django-debug-toolbar,jazzband/django-debug-toolbar,jazzband/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar