Update 1-Page Site with Journey Maps, Personas

[keolasin]

Add:

• Responsive Journey Map (mobile)
• Personas Section

Update:

• Use new Journey Map version for Alyssa Y48
• Higher resolution images for the site

Fixes:

• Google Chrome/Safari check
• Remove carousel (whitespace) of design screens for desktop/wide viewports
• Site sections 100% of viewport height (tall, wide)
• GitHub footer copy

Additional comments:

• Needs more revision in terms of strategy - what's next in terms of the service.