Show progress during Power Query data load

[Paul114]

When loading data, I'm often blind to the load progress. This should be easy to remedy by always showing a record count. In cases where the max record count is unknown, just show the current record count. When loading records using a function to merge through a custom column into a base table, show the base table record count.

[rlansing1]

As well, a green check mark instead of a loading circle on tables that have finished loading could help to highlight which tables are taking the longest to refresh. That would improve m code debugging.