Re-add blog
Re-add blog

- Use styles from upgraded homepage
- Use loop to iterate over blog items, rather than hard-coding 8

Note: If in future you want to limit the number of blog items, you can make the following change:

    - @blog_items.in_groups_of(4, false) do |group|
    + @blog_items.take(8).in_groups_of(4, false) do |group|

mysociety/asktheeu-theme,mysociety/asktheeu-theme