Code review comment for lp:~web2py/web2py/web2py-sphinx

From the commit message:

This is a 2nd setup and push of the Sphinx doc branch based on devel revision 750:
* FAQ now optional
* User Wiki now optional
* still 36 warnings caused by the docstrings
* the intro docs have been corrected and are free of errors and warnings
Please provide feedback on the web2py mailing list
The branch will be proposed for a merge with the devel branch.

Reasons for this merge proposal:
* current web2py/doc contains many errors
* this branch provides a neat basis for further development of the Sphinx doc
* this branch enables developers to test and improve docstrings
* now after the commit of 750 a merge will be painless