submodule guides/3.3 to the latest track its own submodules
Update kohana-latest config entry

- changed version, codename
- download points to Github instead of Redmine
- Github issue tracker does not span accross repositories
  so only kohana/core issue tracker 3.3.3 milestone is set
- Changelog again from Github only comparing kohana/core
  older v3.3.2 tag with tag v3.3.3
Merge pull request #20 from kohana/3.3.3.1-release

3.3.3.1 release