Update Spyder recipe

- Bump version to 2.3.0rc
- Rope and pyflakes are not build dependencies but run ones.
- Add jinja2, sphinx, pep8 and pylint as run dependencies too to cover
Object Inspector dependencies along with more functionality for the
Editor.
- Make pyqt a run dependency for all OSes (as I understand that's the
case now).
Merge pull request #129 from ccordoba12/update-spyder

Update Spyder recipe