Improve bold font visibility

[joehand]

The bold text is not very bold:

What do y'all think about changing the bold font to clear_sans_lightregular:

Or clear_sans_mediumregular:

(Or we could include the clear_sans bold font)

[freeman-lab]

Cool @joehand , seems like a good idea to me!

[freeman-lab]

One might even say, it'd be a bold choice :)

[deltab]

Also for normal text, thanks!