include alert icon in IE warning
improved warning alignment
move IE conditionals to the body tag to lessen compatibility mode triggers
remove warning close button and align warning text
Merge pull request #449 from ascott1/ie-warning

Finalize IE Warning & possible compatibility mode fix
finalize mobile header design
merge conflict in min.css
Merge pull request #450 from ascott1/mobile-header-final

Mobile header final design
use Arial in place of Avenir when printing from IE
simplify hover and active styles
Merge pull request #452 from ascott1/IE-pdf

I :heart: IE and Acrobat!
merge