Some fixes and upgrades to the build

- Upgrade SailsJS version from RC to stable version
- Upgrade SailsJS postgresql module version from RC to stable version
- Setup database connection for production envioronment
- Removes deprecated express config file
- Creates new http config file
- Adds 'safe' option for models in production
Close #53 - Home page redesign
Close #58 - Laws & articles view redesign
Adapts sign in page to new design
Merge pull request #62 from eddie-ruva/feature/landing_page_redesign

Feature/landing page redesign
Merge pull request #64 from eddie-ruva/feature/landing_articles_view

Rediseño de vista de leyes y artículos
Merge pull request #65 from eddie-ruva/feature/sign_in_redesign

Feature/sign in redesign
Merge pull request #66 from CodeandoMexico/redesign

Merge Eddie's redesign