refresh resets group by and color by

[rashley-iqt]

Description

refreshing the dataset resets all group by and color by settings.

Environment

• 0.2.2
• all recent versions of Chrome and Firefox

Steps to reproduce

1. Load a dataset from a url
2. set the group by and color by to any desired values
3. click the refresh icon in the dataset panel

Expected results

the updated data should be displayed with the selected settings

Actual results

the updated data is displayed as if on initial load