I went over all the library rst files and added a link to the source for each of the modules.

Also, I standardized the structure of the headers in all of the files to be in the following order: """
.. module

.. moduleauthor
.. sectionauthor

.. versionadded

**Source code:**

.. testsetup

.. index

--------------
"""

This'll be my first Python patch. Please let me know if I chose to go into too large of a scope and should split this, or if there's anything else I can improve. Also, since I'm modifying most of these files anyway, this might be a good opportunity to modify the header structure I mentioned above.

Thanks