Big red validator: UI Overhaul

This pull request restructures the UI/UX:
1. LESS for CSS Pre-processing
2. WDN v3 Grid Implementation
3. Complete Responsive design
4. Powerful JS:
* Handlebars JS templates
* Handle initial query, rescan automatically for new site
* Provide rescan ability
* Output results more cleanly
* `uglify-js` compression

### Known Issues (to-dos)
1. Output of HTML error details missing
2. Output of bad link details missing