add button to display package versions

Provide same info as 'pveversion -v' on GUI.

www/manager/node/Summary.js

@@ -2,6 +2,67 @@ Ext.define('PVE.node.Summary', {
     extend: 'Ext.panel.Panel',
     alias: 'widget.pveNodeSummary',
 
+    showVersions: function() {
+	var me = this;
+
+	// Note: we use simply text/html here, because ExtJS grid has problems
+	// with cut&paste
+
+	var nodename = me.pveSelNode.data.node;
+
+	var view = Ext.createWidget('component', {
+	    autoScroll: true,
+	    style: {
+		'background-color': 'white',
+		'white-space': 'pre',
+		'font-family': 'monospace',
+		padding: '5px'
+	    }
+	});
+
+	var win = Ext.create('Ext.window.Window', {
+	    title: gettext('Package versions'),
+	    width: 600,
+	    height: 400,
+	    layout: 'fit',
+	    modal: true,
+	    items: [ view ] 
+	});
+
+	PVE.Utils.API2Request({
+	    waitMsgTarget: me,
+	    url: "/nodes/" + nodename + "/apt/versions",
+	    method: 'GET',
+	    failure: function(response, opts) {
+		win.close();
+		Ext.Msg.alert('Error', response.htmlStatus);
+	    },
+	    success: function(response, opts) {
+		win.show();
+		var text = '';
+
+		Ext.Array.each(response.result.data, function(rec) {
+		    var version = "not correctly installed";
+		    var pkg = rec.Package;
+		    if (rec.OldVersion && rec.CurrentState === 'Installed') {
+			version = rec.OldVersion;
+		    }
+		    if (rec.RunningKernel) {
+			text += pkg + ': ' + version + ' (running kernel: ' +
+			    rec.RunningKernel + ')\n'; 
+		    } else if (rec.ManagerVersion) {
+			text += pkg + ': ' + version + ' (running version: ' +
+			    rec.ManagerVersion + ')\n'; 
+		    } else {
+			text += pkg + ': ' + version + '\n'; 
+		    }
+		});
+
+		view.update(Ext.htmlEncode(text));
+	    }
+	});
+    },
+
     initComponent: function() {
         var me = this;
 
@@ -25,6 +86,13 @@ Ext.define('PVE.node.Summary', {
 
 	var rrdurl = "/api2/png/nodes/" + nodename + "/rrd";
   
+	var version_btn = new Ext.Button({
+	    text: gettext('Package versions'),
+	    handler: function(){
+		PVE.Utils.checked_command(function() { me.showVersions(); });
+	    }
+	});
+
 	Ext.apply(me, {
 	    autoScroll: true,
 	    bodyStyle: 'padding:10px',
@@ -32,7 +100,7 @@ Ext.define('PVE.node.Summary', {
 		width: 800,
 		style: 'padding-top:10px'
 	    },		
-	    tbar: [ '->', { xtype: 'pveRRDTypeSelector' } ],
+	    tbar: [version_btn, '->', { xtype: 'pveRRDTypeSelector' } ],
 	    items: [
 		statusview,
 		{