python-patch: added +1 button

[anatoly techtonik]

A matter of pasting the snippet into python-patch front page:

<g:plusone size="medium"></g:plusone>

Bad things about Google Code project's front pages [google code suxx]:

1. They are only editable by admins (other pages can be edited by

    everyone if enabled in project setting)

2. There is no history

So I've created FrontPage in the wiki to keep track of changes manually

and hid it with Deprecated label.