Removed margin-bottom from last p of .blog-footer
.transition-timing-function Mixin
added .transition-timing-function(@timing-function) mixin, defaults to @timing-function.
Merge pull request #12924 from ahmadnassri/transition-timing-function-mixin

.transition-timing-function() Mixin
grunt
Fixes #12824: Remove white-space: nowrap from code elements
Merge pull request #12894 from lipis/patch-2

Removed margin-bottom from last p of .blog-footer