added team filter in timesheet search forms (#3590)

* added team filter in export and invoice search form
* added teams select to timesheet filter
* added team select to report filter
* hide user and team filter if count < 2

src/Form/Toolbar/InvoiceToolbarForm.php

@@ -26,6 +26,7 @@ class InvoiceToolbarForm extends InvoiceToolbarSimpleForm
         $this->addSearchTermInputField($builder);
         if ($options['include_user']) {
             $this->addUsersChoice($builder);
+            $this->addTeamsChoice($builder);
         }
         $this->addActivityMultiChoice($builder, $options, true);
         $this->addTagInputField($builder);