Fix off-by-one corner case discovered during testing of /user/profile.

Added getSingleIndexedParamValue() that retrieves an index into a list of values from the named query parameter, and then indexes into the supplied list of values to return the corresponding value from the list. Used to convert numeric index query parameters passed by POST to the GET redirect target, so that the GET code can display messages, etc. (without passing the message itself as a query argument and having to escape it or have silly people pass in their own...).

Added replaceSuffix(), isReferrerSelf(), and redirectToChangedSuffix() to implement the TODO in the User profile views where the link name portion of the URL needs to change when the link_name Property is updated by the form.

Fixed too long lines and deleted unused imports in id_user.py.

New default values for page title, header title and body of site home page.

Documentation updates and one typo fix.

Add a td.formfielderrorlabel style, to highlight field labels that have errors.

Swap field value and "required" columns to make more columns for field errors.

Add a verbose_name and help_text to the User.id Property.

Explain why pushd and popd are needed when making tiny_mce.zip.

Use zip to compress tiny_mce, and use zipserve to serve it in Google App Engine.

Updated make_release.sh docs and added way for person invoking the script to override script variables such as RELEASE using something like "RELEASE=../testing_release ./make_release.sh".

Add recently-moved feedparser and tiny_mce to APP_DIRS.

Oops, this should have been part of the r580 commit.