Feature Request: Dataset Summary

[billdenney]

Most of the data that I enter should have the same number of data points for each dataset. I also often have many datasets in a single graph (see #71). It would be helpful if there were a dataset summary that would give info on each of the datasets currently available.

The UI I'm thinking of is:

• New menu item under "Data" called something like "Data Summary"
• Make a table that shows the dataset name and the number of data points.
  • The table would likely need to have vertical (and maybe horizontal) scrolling in case there were a lot of datasets or long names.
  • Clicking on the dataset would close the window and change the current data entry dataset to the one clicked.
  • If #71 is implemented, the table would have one column per group.
• At the top of the summary, it would show the minimum and maximum number of points in the data sets.