updated icon fallback image paths
Merge branch 'icon-paths' of https://github.com/plainmade/unmark into featured-styles
slight update to featured mark (visited) styles
Merge branch 'icon-paths'
Merge branch 'featured-styles'
Merged in updates and compiled files for build
Merge branch 'master' into 31-internationalization-translations
Merge branch '31-internationalization-translations' into staging

Conflicts:
	assets/css/unmark.css
	assets/css/unmark_welcome.css
	assets/js/production/unmark.bookmarklet.js
	assets/js/production/unmark.loggedin.js
	assets/js/production/unmark.loggedout.js
	assets/js/production/unmark.plugins.js