Connect Dialog "Version" column - width not saved

**Describe the bug**

For the "Server Name", "Ping Time", "Musicians" and "Location" columns in the server list of the Connect dialog, if the column width is changed, Jamulus shows the column the same width on the next run. However, the width of the "Version" column doesn't seem to get saved/restored.

**To Reproduce**

1. Open the Connect dialog
2. Widen the dialog to show the "Version" column and adjust to fit one of the "...dev-(commit)" format names
3. Exit Jamulus
4. Restart Jamulus
5. Open the Connect dialog

**Expected behavior**

The "Version" column should still be wide enough to fit the "...dev-(commit)" format names

**Screenshots**

**Operating system**

**Version of Jamulus**

Jamulus 3.12.0beta3

Start at the Connect dialog and locate the code that persists and restores server-list column widths. Compare the Version column with Server Name, Ping Time, Musicians, and Location, then reproduce the reported resize, exit, restart, and reopen sequence; done means the Version column retains its adjusted width for dev commit names.

Written by the indexing model from the issue text.