Include css mixin and variables only once

app/assets/stylesheets/default.css

@@ -1,44 +0,0 @@
-/*-- copyright
-OpenProject is a project management system.
-Copyright (C) 2012-2013 the OpenProject Foundation (OPF)
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License version 3.
-
-OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
-Copyright (C) 2006-2013 Jean-Philippe Lang
-Copyright (C) 2010-2013 the ChiliProject Team
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-as published by the Free Software Foundation; either version 2
-of the License, or (at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-
-See doc/COPYRIGHT.rdoc for more details.
-
-++*/
-
-/*
- * This is a manifest file that'll automatically include all the stylesheets available in this directory
- * and any sub-directories. You're free to add application-wide styles to this file and they'll appear at
- * the top of the compiled file, but it's generally better to create a new file per style scope.
- *
- *= require fonts/lato
- *= require fonts/openproject_icon_font
- *= require application
- *= require layout/base
- *= require layout/top_menu
- *= require layout/breadcrumb
- *= require layout/main_menu
- *= require default/application
- *= require layout/footer
- */

app/assets/stylesheets/default.css.sass

@@ -0,0 +1,39 @@
+/*-- copyright
+ * OpenProject is a project management system.
+ * Copyright (C) 2012-2013 the OpenProject Foundation (OPF)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 3.
+ *
+ * OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+ * Copyright (C) 2006-2013 Jean-Philippe Lang
+ * Copyright (C) 2010-2013 the ChiliProject Team
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * See doc/COPYRIGHT.rdoc for more details.  ++*/
+
+
+@import variables
+@import mixins
+@import fonts/lato
+@import fonts/openproject_icon_font
+@import application
+@import layout/base
+@import layout/top_menu
+@import layout/breadcrumb
+@import layout/main_menu
+@import default/application
+@import layout/footer

app/assets/stylesheets/layout/base.css.sass

@@ -25,9 +25,6 @@
  *
  * See doc/COPYRIGHT.rdoc for more details.  ++*/
 
-@import "variables"
-@import "mixins"
-
 html
   overflow-y: scroll
   @include html_body_spacing

app/assets/stylesheets/layout/breadcrumb.css.sass

@@ -25,9 +25,6 @@
  *
  * See doc/COPYRIGHT.rdoc for more details.  ++*/
 
-@import "variables"
-@import "mixins"
-
 #breadcrumb
   @include default-transition
   height: 40px

app/assets/stylesheets/layout/main_menu.css.sass

@@ -25,9 +25,6 @@
  *
  * See doc/COPYRIGHT.rdoc for more details.  ++*/
 
-@import "variables"
-@import "mixins"
-
 #main-menu
   @include default-transition
   bottom: auto

app/assets/stylesheets/layout/top_menu.css.sass

@@ -25,9 +25,6 @@
  *
  * See doc/COPYRIGHT.rdoc for more details.  ++*/
 
-@import "variables"
-@import "mixins"
-
 #logo
   float: left
   width: $main_menu_width - $main_menu_border_width