Incorrect Selections in dashboard widget creation

_From @randypitcherii on February 5, 2018 21:30_

When creating a widget in the tempus thingsboard dashboard interface, selecting a particular time series value often results in the wrong timeseries being selected.

For example, using the NiFi sample data device, creating a line chart widget over the last minute, I select windspeed as the timeseries in the widget configuration, but temperature is shown as the value selected. This is inconsistent each time I pick windspeed.

This bug was encountered after following the setup guide in the TempusDevEnvironment master branch readme.

_Copied from original issue: hashmapinc/Timeseries#165_