I assume the transport code can just be replaced with
a different import statement. The `hid` module code looks
like it needs a special loading. I think I've captured this
in this change.

Rename QuestionChartWidget to TermCountChartWidget as this is what it does, and pull the actual data from the transport layer.

Implement simple table widget. The data is currently stored in the widget settings, but this should be connected to the data api as and when needed

Implement the chart widget, and include the flot library. Data is communicated from Django to the javascript code using html5 data attributes, emembed using a Django custom filter.