refactoring base css fa declaration into an jekyll include to reduce code duplication

src/_includes/code/core.css

@@ -0,0 +1,6 @@
+  display: inline-block;
+  font: normal normal normal 14px/1 FontAwesome; // shortening font declaration
+  font-size: inherit; // can't have font-size inherit on line above, so need to override
+  text-rendering: auto; // optimizelegibility throws things off #1094
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;

src/assets/font-awesome/less/core.less

@@ -5,10 +5,5 @@
 // -------------------------
 
 .@{fa-css-prefix} {
-  display: inline-block;
-  font: normal normal normal 14px/1 FontAwesome; // shortening font declaration
-  font-size: inherit; // can't have font-size inherit on line above, so need to override
-  text-rendering: auto; // optimizelegibility throws things off #1094
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
+{% include code/core.css %}
 }

src/assets/font-awesome/less/font-awesome.less

@@ -1,6 +1,6 @@
 ---
 ---
-{% include code/license.txt %}
+{% include code/license.css %}
 
 @import "variables.less";
 @import "mixins.less";

src/assets/font-awesome/scss/_core.scss

@@ -5,10 +5,5 @@
 // -------------------------
 
 .#{$fa-css-prefix} {
-  display: inline-block;
-  font: normal normal normal 14px/1 FontAwesome; // shortening font declaration
-  font-size: inherit; // can't have font-size inherit on line above, so need to override
-  text-rendering: auto; // optimizelegibility throws things off #1094
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
+{% include code/core.css %}
 }

src/assets/font-awesome/scss/font-awesome.scss

@@ -1,6 +1,6 @@
 ---
 ---
-{% include code/license.txt %}
+{% include code/license.css %}
 
 @import "variables";
 @import "mixins";