Merge pull request #18 from ONSdigital/master

wireframe modifications
Merge pull request #21 from ONSdigital/master

wireframe modifications: articles,bulletin and release chart
Merge pull request #23 from ONSdigital/master

Series search page layout
Merge pull request #25 from ONSdigital/master

Front page changes
Merge pull request #27 from ONSdigital/gh-pages

Release title changed