Make blog post titles clickable

Close #442
Add more margin between blog posts

Close #443
Update Facebook widget's CSS
Fix the "We need..." list
Remove forum section from "Get involved"

Close #314
Close #377 - the IRC counter has been removed
Clean up config files
Clean up JS code
Minor CSS adjustments
Deliver JSON/JSONP with correct mime types

Close #444
Clean up Get Involved CSS
Clean up the get involved box code

- Use a common `.getInvolvedBox` class
- Reduce code duplication
- Fully scalable
Clean up sprite32.png

@veosotano: Remain calm. No need to freak out. We'll have a generator
up and running soon. Maybe not next week, because all hell is about
to break loose, but sometime soon.
Fix latest blog posts' links

Close #446
Remove DB scripts
New static resource builder

- Generates sprites
- Builds js/css bundles
- Minifies css/js
Split up get involved icons sprite
Implement "Participate" box without images

No longer use any images in the "participate" box in the footer
Remove social buttons from the footer

They're still on both the front page and "Get Involved" page
Implement the footer gradient in CSS
Allow posts to have many authors