undo/redo cleanup (#1165)

* fix refactoring error which disabled annotation file clearing

* fix undo behavior on add category label

* fix various undo/redo bugs

* remove logging

* further refinement of annotation undo/redo and actions

* address PR comment

client/src/reducers/annotations.js

@@ -80,15 +80,6 @@ const Annotations = (
         isAddingNewLabel: false,
         categoryAddingNewLabel: null
       };
-    /* this handles both cases, since at this point it's just a string */
-    case "annotation: add new label to category":
-      return {
-        ...state,
-        isAddingNewLabel: false,
-        categoryAddingNewLabel: null,
-        isAddingNewLabelFromOntology: false,
-        categoryAddingNewLabelFromOntology: null
-      };
     case "annotation: activate category edit mode":
       return {
         ...state,
@@ -101,12 +92,6 @@ const Annotations = (
         isEditingCategoryName: false,
         categoryBeingEdited: null
       };
-    case "annotation: category edited":
-      return {
-        ...state,
-        isEditingCategoryName: false,
-        categoryBeingEdited: null
-      };
 
     /* LABEL */
     case "annotation: activate edit label mode":
@@ -124,12 +109,6 @@ const Annotations = (
         isEditingLabelName: false,
         labelEditable: { category: null, label: null }
       };
-    case "annotation: label edited":
-      return {
-        ...state,
-        isEditingLabelName: false,
-        labelEditable: { category: null, label: null }
-      };
     default:
       return state;
   }