Label Dialog Broken

[Richard Heck]

The changeover to InsetParamsWidget has borked the label dialog in ways 
I cannot seem to understand. Try this: Create a new section heading, and 
give it the title "Hello". Now Insert>Label. You ought to get a dialog 
with "sec:Hello", but you get an empty dialog.

Worse problem: If you had something in the dialog previously, you get it 
back again. I.e., LyX invites you to create a duplicate label.

The source of this is that InsetParamsDialog::initializeParams() ignores 
its argument and restores the previous state of the dialog. I don't see 
how this could be over-ridden.

Richard