Add Privacy Policy

[smarziano]

We need to add a privacy policy for the CUTGroup since we are collecting personal information through the signup process.

Below the sign-up form, we want to have this text:
Questions about privacy? Read our policy.

Read out policy should be hyperlinked to another page with information about our privacy policy. (www.cutgroup.org/pages/privacy)

@danxoneil here is a draft of the privacy policy text: https://docs.google.com/document/d/1jviD9Ib4f5yhocLFUrS7tt-Q20bwhu_OFtLuVmNo2wU/edit#