Add font-awesome only if SOCIAL is defined
Update release notes
CSS Style Guide: Change double quotes to single quotes

Update #43
CSS Style Guide: Use 3 digit Hex notation for colors

Update #43
CSS Style Guide: Omit unit specification after "0" values

Update #43
CSS Style Guide: Remove leading 0s

Update #43
CSS Style Guide: Use shorthand properties
CSS Style Guide: Use a space after a property name's colon

Update #43
CSS Style Guide: Use a space between the last selector and the declaration block

Update #43
CSS Style Guide: Remove empty lines and group together related classes and ids

Update #43
Remove redundant CSS rules
CSS Style Guide: Use a space between the last selector and the declaration block

Update #43
CSS Style Guide: No space after comma

Separate selectors and declarations by new lines

Update #43
CSS Style Guide: Put declarations in alphabetical order

Also few declarations didn't have space after color `:#` I fixed them too

Update #43
CSS Style Guide: Fix indentation

Update #43
Add rule for literal class generated in reST

This class uses the same declarations that are defined for `code` in
bootstrap.

Fix #38