Private repos and projects

[emilyb7]

We need a space where we can safely discuss sensitive topics, e.g. client contact details and budgets.

We're not paying for GitHub so all our repos are open source.

@sohilpandya mentioned we could get free private repos as a non-profit. However, I don't think we qualify (and probs never will) see https://github.com/nonprofit.

At the moment, we have info spread out across various spreadsheets, emails and Trello but we need a better long-term solution.