Chili Docking: No minimize button if window given different parent than screen0.

Will not remove button if parent is nil, because that happens when the window is "minimized."
Option to hide core selector window.

The widget itself provides the ctrl-c hotkey so it's necessary to have it on even when not used.
New player placing sound and alarm sound fix.

The placing beep was created from scratch without cracking artifacts the
old version had. The old version was removed.

Removed audible speech at the end of the alarm sound.
Fix PL helptext & cleanup MohoGeo
T2 Radar helptext mentions sonar + fix PL; cleanup
Fix PL helptext & cleanup Annihilator
further T2 Radar cleanup
Fix PL helptext & cleanup Bertha
Fix PL helptext & cleanup Caretaker
Fix PL helptext & cleanup Crusader
Fix PL helptext & cleanup el Storero
Fix PL helptext & cleanup Pylon
Fix PL helptext & cleanup Faraday
Fix PL helptext & cleanup Fusion
Fix PL helptext & cleanup Impaler
Fix PL helptext & cleanup Tick
Fix PL helptext & cleanup Thunderbird
Fix PL helptext & cleanup Surfboard
Fix PL helptext & cleanup Stardust
Fix PL helptext & cleanup Sonar