ui: datastore: minor UX improvements and whitepsace cleanup

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

www/DataStoreConfig.js

@@ -61,6 +61,7 @@ Ext.define('PBS.DataStoreConfig', {
 		    win.show();
 		}
             },
+	    '-',
 	    gc_btn
 	    //edit_btn, remove_btn
         ];
@@ -71,9 +72,6 @@ Ext.define('PBS.DataStoreConfig', {
 	    store: store,
 	    selModel: sm,
 	    tbar: tbar,
-            viewConfig: {
-		trackOver: false
-            },
 	    columns: [
 		{
 		    header: gettext('Name'),
@@ -122,6 +120,7 @@ Ext.define('PBS.DataStoreInputPanel', {
 	{
 	    xtype: 'textfield',
 	    name: 'name',
+	    allowBlank: false,
 	    fieldLabel: gettext('Name'),
 	},
     ],
@@ -130,7 +129,9 @@ Ext.define('PBS.DataStoreInputPanel', {
 	{
 	    xtype: 'textfield',
 	    name: 'path',
-	    fieldLabel: gettext('Backing Path')
+	    allowBlank: false,
+	    fieldLabel: gettext('Backing Path'),
+	    emptyText: gettext('An absolute path'),
 	},
     ],