Add staging environment for website

[khanguslee]

Is your feature request related to a problem? Please describe.
Just in case, master branch has some bugs that are not shown until deployment, we should have a staging branch that we can check before updating master branch with staging.

Describe the solution you'd like

• Create a new staging branch
• Deploy staging branch onto mac-events.staging.netlify.com or similar

Describe alternatives you've considered

• Deploy a build for every pull request (I don't want to waste build time)

Additional context
Need access to the Netlify account to do this.