Feature/template design (WIP)

This pull request has:
- [x] Templates for all pages and subpages following DRY. More abstractions are to follow as it progresses further.
- [x] Stylesheets are arranged and name according to their purpose.

#4, #3  
- [x] Style the front page.
- [x] Style the feature page.
- [x] Style the pricing page.
- [x] Style the vision page.
- [x] Style the team page.
- [x] Style Support page.
- [x] Style the download page.
- [x] Style the Videos page.
- [x] Style the Contact Page.
- [x] Style the testimonial page.