Fix tag attach wizard step

Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>

mayan/apps/tags/wizard_steps.py

@@ -9,6 +9,8 @@ from django.utils.translation import ugettext_lazy as _
 from mayan.apps.sources.wizards import WizardStep
 
 from .forms import TagMultipleSelectionForm
+from .models import Tag
+from .permissions import permission_tag_attach
 
 
 class WizardStepTags(WizardStep):
@@ -37,6 +39,8 @@ class WizardStepTags(WizardStep):
     def get_form_kwargs(self, wizard):
         return {
             'help_text': _('Tags to be attached.'),
+            'model': Tag,
+            'permission': permission_tag_attach,
             'user': wizard.request.user
         }