MessageWindow and string fixes
This MR fixes some deprecation warnings in the message_window.ui file and sets the tab label to not expand (fixes #10162 (closed)).
Additionally, this MR fixes a tooltip string in Preferences.
This MR fixes some deprecation warnings in the message_window.ui file and sets the tab label to not expand (fixes #10162 (closed)).
Additionally, this MR fixes a tooltip string in Preferences.