Use SASS for dependency inclusion

app/assets/stylesheets/backlogs/backlogs.css

@@ -1,44 +0,0 @@
-/*-- copyright
-OpenProject Backlogs Plugin
-
-Copyright (C)2013-2014 the OpenProject Foundation (OPF)
-Copyright (C)2011 Stephan Eckardt, Tim Felgentreff, Marnen Laibow-Koser, Sandro Munda
-Copyright (C)2010-2011 friflaj
-Copyright (C)2010 Maxime Guilbot, Andrew Vit, Joakim Kolsjö, ibussieres, Daniel Passos, Jason Vasquez, jpic, Emiliano Heyns
-Copyright (C)2009-2010 Mark Maglana
-Copyright (C)2009 Joe Heck, Nate Lowrie
-
-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 Backlogs is a derivative work based on ChiliProject Backlogs.
-The copyright follows:
-Copyright (C) 2010-2011 - Emiliano Heyns, Mark Maglana, friflaj
-Copyright (C) 2011 - Jens Ulferts, Gregor Schmidt - Finn GmbH - Berlin, Germany
-
-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.
-
-++*/
-
-/* *
- *= require jquery.ui.all
- *= require backlogs/global
- *= require backlogs/global_print
- *= require backlogs/livepipe-ui/base
- *= require backlogs/jqplot
- *= require backlogs/statistics
- */

app/assets/stylesheets/backlogs/backlogs.css.sass

@@ -0,0 +1,41 @@
+/*-- copyright
+ * OpenProject Backlogs Plugin
+ *
+ * Copyright (C)2013 the OpenProject Foundation (OPF)
+ * Copyright (C)2011 Stephan Eckardt, Tim Felgentreff, Marnen Laibow-Koser, Sandro Munda
+ * Copyright (C)2010-2011 friflaj
+ * Copyright (C)2010 Maxime Guilbot, Andrew Vit, Joakim Kolsjö, ibussieres, Daniel Passos, Jason Vasquez, jpic, Emiliano Heyns
+ * Copyright (C)2009-2010 Mark Maglana
+ * Copyright (C)2009 Joe Heck, Nate Lowrie
+ *
+ * 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 Backlogs is a derivative work based on ChiliProject Backlogs.
+ * The copyright follows:
+ * Copyright (C) 2010-2011 - Emiliano Heyns, Mark Maglana, friflaj
+ * Copyright (C) 2011 - Jens Ulferts, Gregor Schmidt - Finn GmbH - Berlin, Germany
+ *
+ * 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 jquery.ui.all
+@import backlogs/global
+@import backlogs/global_print
+@import backlogs/livepipe-ui/base
+@import backlogs/jqplot
+@import backlogs/statistics