Get table viz work in explore v2: Added d3 format to mock slice

[vera-liu]

Done:
added d3format function to Slice mock in ChartContainer

Before:

After:

The Slice (in caravel.js) properties that are used by table viz:

• .selector
• .removeFilter() --leaving for Control panel components to handle
• .addFilter() --leaving for Control panel components to handle
• .d3format()
• .container.height() --same as height of mock slice
• .container.parents('.widget').find('.tooltip').remove() --leaving for Control panel components to handle
• .container.find('.dataTable').DataTable
• .container.find('.dataTables_wrapper'), height) --I'm not sure how should we mock container in slice for find() calls since we don't currently have dataTable and dataTables_wrapper? @ascott

[ascott]

prefer camelCase for props

[ascott]

looks legit pending change to use camelCase for props.