UIs for fix/check scripts

[m4rc1e]

Thought of this yesterday whilst helping a 3rd party use our tools.

Since we've already started modularising the different scripts, we should have them web based imo.

Aim should be to drag n drop a collection of fonts, run any sequence of scripts, then download the modified fonts. A log file should be included so the steps are repeatable.

[graphicore]

Since it's web based, is this rather a feature request for https://github.com/googlefonts/fontbakery-dashboard?

[felipesanches]

I agree with @graphicore that this would be a good fit for the Fontbakery-Dashboard repo.

[m4rc1e]

Good points folks, I'll port this issue over