Button to turn on/off Object Manager (OM) inside floating window.

Better default on/off setting for floating window

• If OM in main frame is docked and shown, when floating a child window, the OM will show inside floating window.

• If OM in main frame is turned off or not docked, when floating a child window, the OM inside it will not show.

OM in both main frame and floating window works for active window.

@FWOM for default position of OM in floating window. 0 = hide, 1,2,3,4,5 = top,left,rigth,bottom,float