Clean up LESS files

less/lib/font-awesome/core.less

@@ -0,0 +1,13 @@
+// Base Class Definition
+// -------------------------
+
+.@{fa-css-prefix} {
+  display: inline-block;
+  font: normal normal normal @fa-font-size-base/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;
+  transform: translate(0, 0); // ensures no half-pixel rendering in firefox
+
+}