Bug Fix: Correctly spelt filenames

Use the names specified in Gand*i_Serif.css, so there's a chance of
loading them.
Bug Fix: Actually load Gandhi Serif

Default font was being used, because this one wasn't ever being loaded.
Bug Fix: Remove inappropriate tighter tracking

Added by 95ed119, but that wasn't actually Gandhi Serif.

The real Gandhi Serif looks fine as it is.
Fix: #nav width for Gandhi Serif

The actual Gandhi Serif is narrower than the font I was inadvertently
using. Set the widths accordingly.