Added redirect from in_app_payments.html to google_wallet.html.

STAGED REDIRECT: https://chrome-apps-doc.appspot.com/_patch/54243002/apps/in_app_payments.html

R=kalman@chromium.org

Review URL: https://codereview.chromium.org/54243002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232217 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232217
Tweak TOC generation for correct staging

This CL fixes a couple of errors in the generation of YAML TOCs - so now they
will stage properly to the devsite.

In addition, added an example of expandable sections.

BUG=None
R=binji@chromium.org, sbc@chromium.org

Review URL: https://codereview.chromium.org/52973007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232218 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232218