IA Pages - new description for the index page and specify the filter applied in the breadcrumbs
IA Pages - hide mobile screenshots on page load and add buttons to toggle screenshots visibility
Merge pull request #304 from duckduckgo/iapage_tweaks

IA Pages index - replace "this is an alpha prototype of the full index to Instant Answers" with a description of the page.
Merge branch 'master' into screenshots
IA Pages - add styles for the arrow buttons
Merge pull request #307 from duckduckgo/screenshots

IA Pages - hide mobile screenshots on page load and add buttons to toggle screenshots visibility