UI Enhancements

- Changed the admin UI font to Source Sans Pro
- Added “View Site” button to navbar
Added Response Detail Support

Added detail view for responses:
- Ability to mark responses as responded to/not responded to
- View response details
- Email sender button
Frontend UI Tweaks

- Adjusted background and select colors
- Improved layout on mobile devices
- Auto unfocus keyboard when animation begins to allow for smoother
mobile animations