Add ability to donate

[deweydell]

Description

We want people to be able to make donations to WSC easily. There is already a donate button designed and commented out in the header.

Why this is valuable:

This will help reduce barrier for people who'd like to donate but don't know how to.

Acceptance Criteria

• Button is a separate component
• There is a donate button in the header to the right of the social media icons
• The donate button opens up a new tab with paypal link to WSC

Questions

• Can we setup paypal page tor receive money directly (without creating an invoice?)
• Should we set up another system for receiving money?