Added thank you message to promote page for those who have filled out the petition.  Petition is hidden as well.
Merge remote-tracking branch 'remotes/origin/staging' into petition_position

tition_position

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Used .hide()
Moved styling to a CSS section below.
Added brackets
Merge pull request #154 from code-dot-org/petition_position

Added thank you message to promote page for those who have filled out th...