Customise site for official deploy
The changes include the following:
- Add sean's email address as a recipient for the mail server
- Incorporate user feedback from Sean and Nina email dated August 2020
- Customise tiles (add photos, change text, change colour scheme, change layout and behaviour when clicked)
- Add a navigation bar that also tracks with the step number active
- Revamp and sync up the look & colour scheme of the entire site
- Improve contacts section and footer
- Several misc. stylistic changes
These changes are to ready the app for deployment to heroku.