Tidied up css, styling for certificate and embed view
Added embed code with modal popup
Move embed copy to locale file
Changed container class for homepage
Merge branch 'master' of github.com:theodi/open-data-certificate into certificate-embed-styling

Conflicts:
	app/assets/stylesheets/application.css.less
Merge pull request #196 from theodi/certificate-embed-styling

Certificate embed styling