This task is to implement Quick Start content- Main Page

Content link: https://docs.google.com/document/d/1iNtxCvt0qApvURvWfNjgX_0kFmsZIhZBb7vwAqNF7Tg/edit?usp=sharing

Design link: https://docs.google.com/presentation/d/1ynfhJFocDheRaGjHPp44An4eU7oqM2kOIR06wTpwJCQ/edit?usp=sharing

Update: This task has been split in two parts. This first one, which has concluded, takes care of the Quick Start main page. The second one, THREESCALE-11006, will take care of first login notification and dashboard link button to Quick Start main page.