* remove word cloud from viz.py
* Fix Run in SQL Lab
* remove deprecated python tests
* break out legacy endpoint type into function
* Break out exploreChart from exportChart and implement results type
* Fix jest tests and refactor accordingly
* lint
* Rename v1 payload function
* Add dashboard id to v1 chart data request url params
* Add support for domain sharding to v1 chart data request
Change from "100 years go" to "no filter".
100 years ago is basically equivalent to no filter, but has
implications on how x-axis is plotted on certain charts (e.g. Big
Number).
