Když není vybraná sestava, tak je zakázané tlačítko "Tisk". Sjednocení

vzhledu dialogů tisku. 
closes #82

src/main/java/info/bukova/isspst/ui/reporting/ReportDialogVM.java

@@ -46,7 +46,7 @@ public class ReportDialogVM {
 		return selected;
 	}
 
-	@NotifyChange("optionsForm")
+	@NotifyChange({"optionsForm", "selected"})
 	public void setSelected(Report selected) {
 		this.selected = selected;
 		reportDefinition.setReport(selected);

src/main/webapp/app/reporting/report.zul

@@ -1,10 +1,11 @@
 <?page title="${labels.ReportReport}" contentType="text/html;charset=UTF-8"?>
 <zk>
-<window title="${labels.ReportReport}" border="normal" closable="true" apply="org.zkoss.bind.BindComposer"
+<window border="normal" closable="true" apply="org.zkoss.bind.BindComposer"
 	viewModel="@id('vm') @init('info.bukova.isspst.ui.reporting.ReportVM')">
+	<caption src="/img/print.png" zclass="form-caption" label="${labels.ReportReport}" />
 	<toolbar>
 		<toolbarbutton image="/img/send.png" tooltiptext="${labels.ReportSend}"/>
 	</toolbar>
-	<iframe width="800px" height="680px" src="/api/report.pdf"/>
+	<iframe width="800px" height="660px" src="/api/report.pdf"/>
 </window>
 </zk>

src/main/webapp/app/reporting/reportDialog.zul

@@ -1,8 +1,9 @@
 <?page title="${labels.ReportReports}" contentType="text/html;charset=UTF-8"?>
 <zk>
-<window id="reportDialog" title="${labels.ReportReports}" border="normal" apply="org.zkoss.bind.BindComposer"
+<window id="reportDialog" border="normal" apply="org.zkoss.bind.BindComposer"
 	viewModel="@id('vm') @init('info.bukova.isspst.ui.reporting.ReportDialogVM')"
 	closable="true" width="550px">
+	<caption src="/img/print.png" zclass="form-caption" label="${labels.ReportReports}" />
 	
 	<hbox>
 	<listbox model="@load(vm.reports)" width="250px" height="350px" selectedItem="@bind(vm.selected)">
@@ -15,7 +16,7 @@
 	<include src="@load(vm.optionsForm)"/>
 	</hbox>
 	<hbox>
-		<button label="${labels.ReportPrint}" onClick="@command('print', window=reportDialog)"/> <button label="${labels.ButtonStorno}" onClick="reportDialog.detach()"/>
+		<button image="/img/print-button.png" label="${labels.ReportPrint}" onClick="@command('print', window=reportDialog)" sclass="nicebutton" disabled="@bind(empty vm.selected)"/> <button image="~./zul/img/misc/drag-disallow.png" label="${labels.ButtonStorno}" onClick="reportDialog.detach()" sclass="nicebutton"/>
 	</hbox>
 	
 </window>