Add back link underlines on hover.
Update README with information on symlinks in the repo and building
Use fixed positioning for mobile nav to prevent overscroll render issues
Add effective date to the alert simulator
Add alert styles for the h2 that will contain the effective date
Change `.clear` convience class back to `clear:both;`

That is how it has behaved in the past and people will expect that using
that class will cause the element that has it to be cleared (not
clearfixed).
Swap the alert server to production (again)