theme fixing

theme/style.less

@@ -1,11 +1,11 @@
 /* Import all components */
-@import 'pxtsemantic';
 @import 'pxt';
 @import 'blockly-toolbox';
 @import 'themes/default/globals/site.variables';
 @import 'themes/pxt/globals/site.variables';
 @import 'site/globals/site.variables';
 @import 'themes/default/collections/menu.variables';
+@import 'pxtsemantic';
 
 @import 'fieldeditors';
 

theme/theme.config

@@ -17,6 +17,8 @@
    specify theme name below
 */
 
+@placeholder: 'default';
+
 /* Global */
 @site       : 'pxt';
 @reset      : 'default';
@@ -88,6 +90,7 @@
 *******************************/
 
 @import "theme.less";
+@import (multiple) "theme.less";
 
 @fontPath  : 'fonts';