Change icon for the new money cost bar

It is the same icon like the one for reported hours but using a different color

FEA: ItEr76S17MoneyCostMonitoringSystem

ganttzk/src/main/resources/web/ganttz/zul/plannerLayout.zul

@@ -86,9 +86,8 @@ planner = self;
             sclass="planner-command"/>
         <separator />
 
-        <!-- TODO change icon -->
         <button id="showMoneyCostBar" onClick="planner.showMoneyCostBar();"
-            image="/common/img/ico_costs.png"
+            image="/common/img/ico_money_cost_bar.png"
             tooltiptext="${ganttzk_i18n:_('Show/Hide money cost bar')}"
             sclass="planner-command"/>
         <separator />
@@ -123,4 +122,4 @@ planner = self;
             <div id="insertionPointChart" />
         </south>
     </borderlayout>
-</zk>
+</zk>