I have implemented the fix for RM #3316 "Pgadmin4 No Tray Crash". I have implemented it as follows:
Check the availability of System Tray for 30 seconds (no changes made here).
If System Tray not found create one Floating Window with menu. (Refer attached screenshot).
I have remove close(x) button of the floating window.
Fedora have "Quit" menu for the applications, so I have handle the close event and shutdown the python server.
I have tested this on Fedora-28 (no system tray) and Ubuntu 18.04 (with system tray).
Please review the screenshot and suggest changes (if any). I'll send the patch later.
What does the window look like without the menu? I'd suggest putting a Slonik image there, and maybe a note (or a button to display a note) saying that installing a system tray plugin can be used to hide the window.
