Update blog.
Add fields for disqus and google_analytics, without behavior, these fields are reserved for future use.
Release 0.1.7
Merge pull request #2 in PROSA/prosa-blog-server from feature/PROSA-5-unpublish-blogs to master

# By Eduardo  Díaz Cortés
# Via Eduardo  Díaz Cortés
* commit 'ab6386ecaf0311c7b6f9adc7d10b24df5b038915':
  Update blog. Add fields for disqus and google_analytics, without behavior, these fields are reserved for future use. Release 0.1.7