WIP: FEATURE: SS4 Upgrade

_config/legacy.yml

 SilverStripe\ORM\DatabaseAdmin:
   classname_value_remapping:
+    DisplayRulesExtension: ThunderCats\UserSurveys\Extension\DisplayRulesExtension
+    EditableAutosuggestField: ThunderCats\UserSurveys\EditableFormField\EditableAutosuggestField
+    EditableDateFieldExtension: ThunderCats\UserSurveys\Extension\EditableDateFieldExtension
+    EditableFieldHasChildren: ThunderCats\UserSurveys\Traits\EditableFieldHasChildren
+    EditableFormFieldExtension: ThunderCats\UserSurveys\Extension\EditableFormFieldExtension
+    EditableFormFieldGroup: ThunderCats\UserSurveys\EditableFormField\EditableFormFieldGroup
+    EditableFormHeadingExtension: ThunderCats\UserSurveys\Extension\EditableFormHeadingExtension
+    EditableFormInstruction: ThunderCats\UserSurveys\EditableFormField\EditableFormInstruction
+    EditableMultipleOptionFieldExtension: ThunderCats\UserSurveys\Extension\EditableMultipleOptionFieldExtension
+    EditableNameField: ThunderCats\UserSurveys\EditableFormField\EditableNameField
+    EditableNumericFieldExtension: ThunderCats\UserSurveys\Extension\EditableNumericFieldExtension
+    EditableTableRow: ThunderCats\UserSurveys\EditableFormField\Table\EditableTableRow
+    EditableTextFieldExtension: ThunderCats\UserSurveys\Extension\EditableTextFieldExtension
+    EditableThousandsField: ThunderCats\UserSurveys\EditableFormField\EditableThousandsField
+    PlaceHolderField: ThunderCats\UserSurveys\EditableFormField\PlaceHolderField
     Section: ThunderCats\UserSurveys\Model\Section
     SurveyContactInformation: ThunderCats\UserSurveys\Model\SurveyContactInformation
-    UserSurveysDisplayRule: ThunderCats\UserSurveys\Model\UserSurveysDisplayRule
-    Section: ThunderCats\UserSurveys\Model\Section
+    SurveyContactInformationAdmin: ThunderCats\UserSurveys\ModelAdmin\SurveyContactInformationAdmin
+    SurveySiteConfigExtension: ThunderCats\UserSurveys\Extension\SurveySiteConfigExtension
+    SurveyUserDefinedForm_Controller: ThunderCats\UserSurveys\PageType\SurveyUserDefinedForm_Controller
     SurveyUserDefinedForm: ThunderCats\UserSurveys\PageType\SurveyUserDefinedForm
+    ThreeColumnTableField: ThunderCats\UserSurveys\EditableFormField\Table\ThreeColumnTableField
+    TwoColumnTableField: ThunderCats\UserSurveys\EditableFormField\Table\TwoColumnTableField
+    UserSurveysDisplayRule: ThunderCats\UserSurveys\Model\UserSurveysDisplayRule
+    UserSurveysEditableCheckboxGroupField: ThunderCats\UserSurveys\EditableFormField\UserSurveysEditableCheckboxGroupField
+    UserSurveysEditableRadioField: ThunderCats\UserSurveys\EditableFormField\UserSurveysEditableRadioField
+    UserSurveysFormField: ThunderCats\UserSurveys\Model\UserSurveysFormField
+    UserSurveysJsonSerializable: ThunderCats\UserSurveys\Model\UserSurveysJsonSerializable