Message 173412 - Python tracker

Thanks for your suggestions, Nick and Todd.  While reviewing them, I realized that there is also a small context (right-click) menu for the IDLE shell window as well.  I expanded the doc changes to include it and included several other minor doc updates.  I also updated the builtin IDLE Help file.

By the way, if you haven't already and wish to contribute patches, please be sure to sign a PSF contributor agreement (http://www.python.org/psf/contrib/).