Move styles to core-ui

static/atom.less

@@ -15,15 +15,8 @@
 @import "normalize";
 @import "scaffolding";
 
-// Core components
-@import "cursors";
-@import "panels";
-@import "docks";
-@import "panes";
-@import "syntax";
-@import "text-editor";
-@import "title-bar";
-@import "workspace-view";
+// Core UI styles
+@import "core-ui/_index";
 
-// Atom UI library
+// Atom UI library/components
 @import "atom-ui/_index";

static/core-ui/_index.less

@@ -0,0 +1,11 @@
+// Atom Core UI
+// These styles are part of Atom Core
+
+@import "cursors";
+@import "panels";
+@import "docks";
+@import "panes";
+@import "syntax";
+@import "text-editor";
+@import "title-bar";
+@import "workspace-view";