erp5_production_planning&erp5_xhtml_style: change class name

previous class has background color

bt5/erp5_production_planning/SkinTemplateItem/portal_skins/erp5_production_planning/ProductionPlanning_view/matrixbox_quantity.xml

@@ -275,7 +275,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>python: "error" if (cell and ((not cell.getSpecialise() and cell.getQuantity()) or (cell.getSpecialiseValue().getQuantity() != cell.getQuantity()))) else ""</string> </value>
+            <value> <string>python: "warning" if (cell and ((not cell.getSpecialise() and cell.getQuantity()) or (cell.getSpecialiseValue().getQuantity() != cell.getQuantity()))) else ""</string> </value>
         </item>
       </dictionary>
     </pickle>

product/ERP5/bootstrap/erp5_xhtml_style/SkinTemplateItem/portal_skins/erp5_xhtml_style/erp5.css.css

@@ -420,6 +420,10 @@ fieldset.bottom .field .input {
   color: #f40;
 }
 
+.content .field .warning {
+  color: #f40;
+}
+
 .content .error .input {
   border: 1px solid #f40;
 }