Specify default advanced settings for Print Widget

[MarkStelzel]

It would be great if the Print Widget configuration menu allowed for the specification of default advanced settings such as DPI or legend/no legend.

[Pierre_Andre_JosephPelletier]

I would like to be able to preset the Scale and DPI of the print app of a web map without have to go into th Setting of print widget 

[mthompson]

This seems like a no brainer. Setting the default scale units and legend visibility are necessary. We can't expect random citizens to view our web apps and know to open the advanced settings and then be able to figure out how to change these things when the defaults don't make sense for our community.

We should also be able to hide the options we don't want the public to be able to change.