Merge branch 'dev.webcompat.com' of https://github.com/webcompat/webcompat.com into dev.webcompat.com
Optimised one more image
add grunt imagemins
add folder development due to loop between autoprefixer watch myth
add folder base
add file header.css
fix file's name
add file body.css
add file button.css
fix path
add file footer.css
add file issues.css
add file comment.css
**/* folder
add link contributors
add custom media queries
fix custom media
add file contributors.html
add content contributors.html
Merge pull request #183 from tagawa/images

Optimised one more image