Add Google font imports (Gatsby) (graphql#924)

Author: mikeesto

src/css/variables.less

@@ -1,3 +1,6 @@
+@import url(http://github.com/%3Cspan%20class=%22pl-s%22%3E%3Cspan%20class=%22pl-pds%22%3E"%3C/span%3Ehttps://fonts.googleapis.com/css?family=Rubik:300|Roboto:300%3Cspan%20class=%22pl-pds%22%3E"%3C/span%3E%3C/span%3E);
+@import url(http://github.com/%3Cspan%20class=%22pl-s%22%3E%3Cspan%20class=%22pl-pds%22%3E"%3C/span%3Ehttps://fonts.googleapis.com/css?family=Roboto+Mono:400,400i,600%3Cspan%20class=%22pl-pds%22%3E"%3C/span%3E%3C/span%3E);
+
 /* https://www.pantone.com/color-finder/Rhodamine-Red-C */
 @dark-color: #171E26;
 @rhodamine-color: #E10098;