Reason:
When an undocked side tray tab floater got closed with Ctrl+Shift+W,
LLSideTray::setTabDocked() was called. It docked the floater but didn't update
the dock/undock icon.
Fix:
Made setTabDocked() a general purpose method, not a hack suitable for using
only as a floater close callback in the basic viewer mode.
It now updates the dock/undock icon.
Other changes:
* Replaced numerous calls to toggleTabDocked with setDocked(),
that is safer because does exactly what you want.
* Got rid of a duplicated floater close callback.
ShowSideTrayPanel action can now toggle undocked panels
OpenSidePanelsInFloaters works now
Clossing a sidepanel floater will not return contents to side tray
close button enabled in minimal skin for side panel floaters
All detached side tray tabs are now wrapped with LLFloaterSideTrayTab that adds them as exceptions to LLTransientFloaterMgr,
i.e. as views clicking on which doesn't hide transient floaters.
Vadim ProductEngine