Add ARIA label for mail accounts toggle buttons

UI/Common/English.lproj/Localizable.strings

@@ -121,6 +121,9 @@
 /* Error message display bellow search field when the search string has less than the required number of characters */
 "Enter at least %{minimumSearchLength} characters" = "Enter at least %{minimumSearchLength} characters";
 
+/* Toggle visibility (ex: mail account in left navigation menu) */
+"Toggle visibility" = "Toggle visibility";
+
 /* Question mark shows list of hotkeys */
 "Show or hide this help" = "Show or hide this help";
 

UI/Templates/MailerUI/UIxMailMainFrame.wox

@@ -38,7 +38,8 @@
                  ng-repeat="account in ::app.accounts track by account.id"
                  ng-class="{ 'md-flex': account.$expanded }">
           <md-list>
-            <md-list-item ng-click="app.toggleAccountState(account)">
+            <md-list-item aria-label="{{ ::'Toggle visibility' | loc }}"
+                          ng-click="app.toggleAccountState(account)">
               <div class="sg-no-wrap">{{account.name}}</div>
 	      <md-menu class="md-secondary">
 		<md-icon label:aria-label="Options"