Moved files from /sass to /scss

A technicality, but I'm using the SCSS format, not SASS.
Removed compiled LESS stylesheet.
Moved category output to post meta in header.
Compiled css from sass
Moved files from /sass to /scss
Social icons code for Sass 3.3

The multiple variable @each statement is currently incompatible with
version 0.1.1 of Brackets SASS. I'm committing this in the event that I
can put it in place.