ui: add/fix help buttons

added a few more help buttons were appropriate:

* GC and Prune schedule windows
* Create Directory window
* API Tokens, link directly to token section
* verify jobs window

Signed-off-by: Aaron Lauterer <a.lauterer@proxmox.com>

www/datastore/PruneAndGC.js

@@ -70,6 +70,7 @@ Ext.define('PBS.DataStorePruneAndGC', {
 	    editor: {
 		xtype: 'proxmoxWindowEdit',
 		title: gettext('GC Schedule'),
+		onlineHelp: 'maintenance_gc',
 		items: {
 		    xtype: 'pbsCalendarEvent',
 		    name: 'gc-schedule',
@@ -86,6 +87,7 @@ Ext.define('PBS.DataStorePruneAndGC', {
 	    editor: {
 		xtype: 'proxmoxWindowEdit',
 		title: gettext('Prune Schedule'),
+		onlineHelp: 'maintenance_pruning',
 		items: {
 		    xtype: 'pbsCalendarEvent',
 		    name: 'prune-schedule',