fix #3067: ui: add a separate notes view for longer markdown notes

since markdown notes might be rather long, this commit adds a tab
similar to pve's datacenter or node notes. requires a bump of the
widget toolkit in order to use the `pmxNotesView`.

Signed-off-by: Stefan Sterz <s.sterz@proxmox.com>

www/Makefile

@@ -99,6 +99,7 @@ JSSRC=							\
 	datastore/DataStoreList.js			\
 	ServerStatus.js					\
 	ServerAdministration.js				\
+	NodeNotes.js				        \
 	Dashboard.js					\
 	${TAPE_UI_FILES}				\
 	NavigationTree.js				\

www/NavigationTree.js

@@ -32,6 +32,12 @@ Ext.define('PBS.store.NavigationStore', {
 		path: 'pbsDashboard',
 		leaf: true,
 	    },
+	    {
+		text: gettext('Notes'),
+		iconCls: 'fa fa-sticky-note-o',
+		path: 'pbsNodeNotes',
+		leaf: true,
+	    },
 	    {
 		text: gettext('Configuration'),
 		iconCls: 'fa fa-gears',

www/NodeNotes.js

@@ -0,0 +1,23 @@
+// Needs to be its own xtype for `path` to work in `NavigationTree`
+Ext.define('PBS.NodeNotes', {
+    extend: 'Ext.panel.Panel',
+    xtype: 'pbsNodeNotes',
+
+    scrollable: true,
+    layout: 'fit',
+
+    items: [
+	{
+	    xtype: 'container',
+	    layout: 'fit',
+	    items: [{
+		xtype: 'pmxNotesView',
+		tools: false,
+		border: false,
+		node: 'localhost',
+		enableTBar: true,
+		maxLength: 1022*64,
+	    }],
+	},
+    ],
+});