Replace original banners

- Removed ZendCon-EU banners, replaced hero banner and training banner to
  original locations
Merge branch 'hotfix/banners'
Apigility 0.8.0 release announcement
Merge branch 'feature/ag-0.8.0'

Apigility 0.8.0 announcement
Use absolute URI for wget

- Per comment
Compiled blog
Updated "updated" date

- And added a note on the update at the end of the post
Compiled blog
Merge branch 'hotfix/ag-link'
Point users to packages.zf.com PDF and EPUB downloads

- instead of rtfd.org, where they are currently broken.
Merge branch 'hotfix/pdf-link'

Fixes PDF/EPUB links on downloads/latest page