Re-write README, add Disqus JS to todos, fix ProductionProfiler, more…

- Re-write README.rst
- Require deb package exuberant-ctags on deployment targets (for myself)
- Change TIME_ZONE from 'Australia/Perth' to 'Australia/West'
- Require deb package postgresql-client-9.1 on deploment (for the db)
- Use new vanity Google+ link in vanity links
- Fix ProductionProfiler class
- Add Disqus code to be added to blog posts