Initial load of parquet file is clunky

[Conor-Yates-Koch]

When first loading a .parquet file, the window will appear blank. The only way to get the data to actually display is as follows:

1. Change the view type from Grid to any other selection (for example, X Bar Chart)
2. Change the view type back to Grid
3. Click Refresh Data

The file does indeed appear to load initially, even when it is not displayed, as the file metadata is displayed across the bottom of the window (Rows, Columns, FileSize, and LoadTime). It appears to be the case that the primary view is simply not being displayed.

[RandomFractals]

yes. See this update for more info: #316 (comment)