Doctrine1 Documentation

This is reStructuredText transation of the Doctrine1 documentation, formerly at http://www.doctrine-project.org/documentation/ (now the home of the Doctrine2 documentation).

Concentrating on the English documentation for now. Titles are mostly formatted correctly, but most of the other formatting (code examples and the like) is still missing. Pandoc was used for initial Markdown to reST.

Pull requests welcome.