Merge branch 'release/2.1.5'

Ready for 2.1.5
Fix issues with blog

- URIs for entry had an extra "/" character prior
- Disqus was using current host name, and defaulting to mwop.net; fixed
  to default to framework.zend.com.
Recompiled blog after fixes
Merge branch 'hotfix/blog-fixes' into develop

Fix disqus issues