Add an option to modify scale so that high resolution site can be seen.

[tejohnso]

I'm looking for a desktop mode that actually causes the web site (eg: cnn.com) to display as it does on my desktop. Currently the site does not display the high resolution layout even if desktop mode is selected on my eink device. I suspect it is because my device's pixel ratio is fixed at a high 2.5 and I can't modify it. A toggle that would allow javascript injection to update the scale would work. Something like:

document.querySelector('meta[name=viewport]').setAttribute('content', 'width=device-width, initial-scale=0.7')

Where the 0.7 scale is increased or decreased based on a setting in the UI that is saved and is site specific. Similar to the font increase button.