Update nsPopover.js
Update nsPopover.js

fix setting default values for new nsPopoverProvider (hideOnClick, mouserelative_x, mouserelative_y)
maxdow/nsPopover,silentlagoon/nsPopover,nohros/nsPopover,silentlagoon/nsPopover,nohros/nsPopover,mavencare/nsPopover,mavencare/nsPopover,gabehayes/nsPopover,maxdow/nsPopover,zpzgone/nsPopover,britter/nsPopover,gabehayes/nsPopover,Envoc/nsPopover,britter/nsPopover,BetterWorks/nsPopover,BetterWorks/nsPopover,zpzgone/nsPopover