[PATCH v2] requirements: Update django debug toolbar to 1.5

[Stephen Finucane]

On 30 Aug 00:38, Stephen Finucane wrote:
> This is the latest version. This breaks compatibility with Django 1.7,
> but this version is unsupported and should not be used for development.
> We do, however, continue to test support for Django 1.7 and 1.6.
> 
> This also prevents the need to manually track sqlparse dependency [1].
> 
> [1] https://github.com/jazzband/django-debug-toolbar/issues/856
> 
> Signed-off-by: Stephen Finucane <stephenfinucane at hotmail.com>
> ---
> v2:
> - Disable for Django < 1.8 via settings

All unit tests pass with this patch, and it's simpler than the
alternatives. Merged.

Stephen