Closes #12246: General cleanup of utilities modules

* Clean up base modules

* Clean up forms modules

* Clean up templatetags modules

* Replace custom simplify_decimal filter with floatformat

* Misc cleanup

* Merge ReturnURLForm into ConfirmationForm

* Clean up import statements for utilities.forms

* Fix field class references in docs

netbox/tenancy/forms/bulk_edit.py

@@ -3,7 +3,8 @@ from django import forms
 from netbox.forms import NetBoxModelBulkEditForm
 from tenancy.choices import ContactPriorityChoices
 from tenancy.models import *
-from utilities.forms import CommentField, DynamicModelChoiceField, add_blank_choice
+from utilities.forms import add_blank_choice
+from utilities.forms.fields import CommentField, DynamicModelChoiceField
 
 __all__ = (
     'ContactAssignmentBulkEditForm',

netbox/tenancy/forms/bulk_import.py

@@ -1,7 +1,7 @@
 from django.utils.translation import gettext as _
 from netbox.forms import NetBoxModelImportForm
 from tenancy.models import *
-from utilities.forms import CSVModelChoiceField, SlugField
+from utilities.forms.fields import CSVModelChoiceField, SlugField
 
 __all__ = (
     'ContactImportForm',

netbox/tenancy/forms/forms.py

@@ -2,7 +2,7 @@ from django import forms
 from django.utils.translation import gettext as _
 
 from tenancy.models import *
-from utilities.forms import DynamicModelChoiceField, DynamicModelMultipleChoiceField
+from utilities.forms.fields import DynamicModelChoiceField, DynamicModelMultipleChoiceField
 
 __all__ = (
     'ContactModelFilterForm',

netbox/tenancy/forms/model_forms.py

@@ -2,9 +2,8 @@ from django import forms
 
 from netbox.forms import NetBoxModelForm
 from tenancy.models import *
-from utilities.forms import (
-    BootstrapMixin, CommentField, DynamicModelChoiceField, SlugField,
-)
+from utilities.forms import BootstrapMixin
+from utilities.forms.fields import CommentField, DynamicModelChoiceField, SlugField
 
 __all__ = (
     'ContactAssignmentForm',