Added a new popup to modify the columns of the table. With this new popup, the user can:
- Show and hide columns
- Move columns around
- Add new columns which are derived from the value of an expression
- Delete columns
Also got the overlay mechanisms working.
- Fixed the '-local' flag to accept host and port
- Added a '-debug' flag to accept a file to write debug log messages
- Added some logic which will force the dark background flag on if MacOS is in dark mode
Leon Mika