Update development and CI configurations
Test under Plone 4.0/4.1 (Python 2.6) also
Keep zc.buildout under branch 1.x
Fix development configuration (extend from testing configuration
Refactor package distribution

- Rename documentation files as .rst
- Update MANIFEST.in
Fix CI configuration
Add support for code analysis
Add suport for Coveralls
Merge branch 'master' into issue_2