unslugified chartname in include_container

[ingodjango]

Hi All,
I have an issues with version 0.13.7.

First is in NVD3Chart.py line 173-175: (from python-nvd3)

def _slugify_name(self, name):
    """Slufigy name with underscore"""
    self.name = slugify(name, separator='_')

I have a Container name that looks like 'ContainerName' in my template, also do include_container with that name.
Since slugify removes the capital letters d3.select will not be able to find the correct container.
In content.html in line 101:
d3.select('#{{ chart.name }} svg')
Will then look for 'containername svg' instead of 'ContainerName svg' .
The reason seems to be that in nvd3_tags in line 94 the chart name is an unslugified representation:
chart.name = str(include_container)
using:
chart.name = slugify(include_container, separator='_')
seems to work.