Make Django Debug Toolbar compatible with Django 1.3

[msaelices]

I am testing Django Debug Toolbar with Django 1.3

Because Django 1.3 response.content object can be an iterable (when serving static content), you always miss the content if you operate with response.content.

In example:

>>> response.content
'alert("Hello world");'
>>> response.content
''

This make fails request like http://localhost:8000/**debug**/m/js/toolbar.js or similar (CSS and JS). This are always small CSS or JS snippets and I've fixed the issue only copying response.content in a local variable and reassigning againg this variable to response.

Also, the AJAX views should be implemented avoiding CSRF protection checking.