move render{building,buildingturreted,unit} into mods.ra; move all render traits into mods.ra.render

OpenRA.Mods.Cnc/TiberiumRefineryDockAction.cs

@@ -16,14 +16,12 @@
  *  You should have received a copy of the GNU General Public License
  *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
  */
-#endregion
-
-using System;
-using System.Linq;
-using System.Collections.Generic;
-using OpenRA.Mods.RA;
-using OpenRA.Mods.RA.Activities;
-using OpenRA.Traits;
+#endregion
+
+using OpenRA.Mods.RA;
+using OpenRA.Mods.RA.Activities;
+using OpenRA.Mods.RA.Render;
+using OpenRA.Traits;
 using OpenRA.Traits.Activities;
 
 namespace OpenRA.Mods.Cnc