Correctly convert new folder/label names to UTF7

app/internal_packages/account-sidebar/lib/sidebar-item.coffee

@@ -65,10 +65,10 @@ onEditItem = (item, value) ->
   if newDisplayName is category.displayName
     return
 
-  Actions.queueTask(new SyncbackCategoryTask({
+  Actions.queueTask(SyncbackCategoryTask.forRenaming({
     accountId: category.accountId,
-    existingPath: category.path,
-    path: newDisplayName,
+    path: category.path,
+    newName: newDisplayName,
   }))
 
 

app/internal_packages/account-sidebar/lib/sidebar-section.coffee

@@ -183,8 +183,8 @@ class SidebarSection
       onCollapseToggled: onCollapseToggled
       onItemCreated: (displayName) ->
         return unless displayName
-        Actions.queueTask(new SyncbackCategoryTask({
-          path: displayName,
+        Actions.queueTask(SyncbackCategoryTask.forCreating({
+          name: displayName,
           accountId: account.id,
         }))
     }

app/internal_packages/category-picker/lib/label-picker-popover.jsx

@@ -99,8 +99,8 @@ export default class LabelPickerPopover extends Component {
     if (threads.length === 0) return;
 
     if (item.newCategoryItem) {
-      const syncbackTask = new SyncbackCategoryTask({
-        path: this.state.searchValue,
+      const syncbackTask = SyncbackCategoryTask.forCreating({
+        name: this.state.searchValue,
         accountId: account.id,
       });
 

app/internal_packages/category-picker/lib/move-picker-popover.jsx

@@ -129,8 +129,8 @@ export default class MovePickerPopover extends Component {
   };
 
   _onCreateCategory = () => {
-    const syncbackTask = new SyncbackCategoryTask({
-      path: this.state.searchValue,
+    const syncbackTask = SyncbackCategoryTask.forCreating({
+      name: this.state.searchValue,
       accountId: this.props.account.id,
     });
 

app/src/flux/tasks/syncback-category-task.es6

@@ -1,3 +1,4 @@
+import utf7 from 'utf7';
 import Task from './task';
 import Attributes from '../attributes';
 
@@ -14,11 +15,19 @@ export default class SyncbackCategoryTask extends Task {
     }),
   });
 
-  constructor({ existingPath, path, accountId, ...rest } = {}) {
-    super(rest);
-    this.existingPath = existingPath;
-    this.path = path;
-    this.accountId = accountId;
+  static forCreating({ name, accountId }) {
+    return new SyncbackCategoryTask({
+      path: utf7.imap.encode(name),
+      accountId: accountId,
+    });
+  }
+
+  static forRenaming({ path, accountId, newName }) {
+    return new SyncbackCategoryTask({
+      existingPath: path,
+      path: utf7.imap.encode(newName),
+      accountId: accountId,
+    });
   }
 
   label() {