Fixed XFN relationship background-image url
[BUGFIX] Fix some Rubocop warnings in config.rb.
[CLEANUP] Consistently use once space after a colon in a rule in add-ons/.

This fixes the following scss-lint warning:

"Colon after property should be followed by 1 space"

This is part of an effort to fix all scss-lint warnings in yaml.
Merge pull request #44 from aisayko/microformats_css_fix

Fixed XFN relationship background-image url
Merge pull request #49 from braingourmets/ruby-stylechecks

[BUGFIX] Fix some Rubocop warnings in config.rb.
Merge pull request #51 from braingourmets/space-after-colon

[CLEANUP] Consistently use one space after a colon in a rule in add-ons.
Bugfix: grid generator created push/pull classes incompatible to IE6