Make window.print() configurable. The "Mozilla Print" strategy is internally identif...

Make window.print() configurable.  The "Mozilla Print" strategy is internally identified as 'webBrowserPrint', and it uses XPCOM for printing the contents of an HTML document.  However, in some cases we override this with a 'window.print' strategy to workaround bugs.  A problem with this has been that an actual bare javascript window.print() does not honor any of configured "gPrintSettings".  However, it is informed by (and in turn informs) a Mozilla preference called print.print_printer.  Right now window.print (if used from within the JSAN util.print library) only gets called in when in the Default printer context/role.  So we force print.print_printer to equal the configured printer for the Default role.  Have I mentioned that I hate printing in Mozilla?

git-svn-id: svn://svn.open-ils.org/ILS/trunk@19316 dcc99617-32d9-48b4-a31d-7c20da2025e4