Fix GTM
Convert newsletter input to text_field from email_field
Add fieldset around form and replace h2 with legend
Make some accessibility improvements to the newsletter form JS

Add aria-invalid, aria-describedby to newsletter input and role=alert
for thank you message …and some other code tidies.
Update Sass comment
Convert hard coded ID into variable on Newsletter signup JS
Fix car campaign and menu item alignments
Merge pull request #543 from moneyadviceservice/ui_fixes

Fix car campaign and menu item alignments
Revert "Remove block from news reader"

This reverts commit af13d46eba4c96f465ac171864b4b1b11bcdb88a.
Call block when repository returns an empty collection
Merge branch 'bug/news-index-404'
Be consistent when closing tags
Merge pull request #545 from moneyadviceservice/closing-tags

Be consistent when closing tags
Tidy up base layout comments
Merge pull request #546 from moneyadviceservice/base-layout-comments

Tidy up base layout comments
Fix JSHint warnings in base layout
Merge pull request #547 from moneyadviceservice/base-layout-js

Fix JSHint warnings in base layout
Add assign_active_categories to Navigation concern
Use assign_active_categories in controllers
Fix rubocop styling error