[REF] web: change kanban icons and colorpickers

addons/web/static/src/xml/kanban.xml

@@ -44,7 +44,7 @@
 <t t-name="KanbanView.ColumnQuickCreate">
     <div class="o_column_quick_create">
         <div class="o_column_header">
-            <span class="o_kanban_add_column"><i class="fa fa-chevron-right"/></span>
+            <span class="o_kanban_add_column"><i class="fa fa-plus"/></span>
             <span class="o_kanban_title">Add new Column</span>
         </div>
         <div class="o_kanban_quick_create">
@@ -65,7 +65,7 @@
 </t>
 
 <t t-name="KanbanColorPicker">
-    <li t-foreach="10" t-as="color">
+    <li t-foreach="12" t-as="color">
         <a href="#" t-att-data-color="color_index" t-attf-class="oe_kanban_color_#{color}"/>
     </li>
 </t>