Improve use of Proxima Nova on Workfront properties

Proxima Nova is very difficult to read on Workfront sites. lowercase i and l, look the same.

I have Clear Type font set, and I tried to turn off Hardware Acceleration, but made no difference.

The exact same font rendering problem appears in FireFox as well.

It seems to be the Bold rendering of the font specifically.

I have not seen this problem on other sites with Proxima Nova fonts.