Fix javascript assets
Use Foundation 5 instead of xtyle.
Avoid the known Foundation's bug.

This will be solved the next release, v5.0.3.
See:
https://github.com/zurb/foundation/commit/12ad42f8a5c6566df009096d6b6158b3df4e0b9d
Proper javascript loading order.
Use SCSS files, not pre-compiled CSS.
Apply _settings for color schemes
Add Machin#slug for parmanent links.
Implement /index view with Foundation.