toggles unread/read when clicking the circle

src/js/controller/mail-list.js

@@ -81,10 +81,10 @@ define(function(require) {
         };
 
         /**
-         * Mark an email as unread
+         * Mark an email as unread or read, respectively
          */
-        $scope.markUnread = function(email) {
-            email.unread = true;
+        $scope.toggleUnread = function(email) {
+            email.unread = !email.unread;
             $scope.synchronize();
         };
 

src/tpl/mail-list.html

@@ -13,7 +13,7 @@
       <li ng-class="{'mail-list-active': email === state.mailList.selected, 'mail-list-attachment': email.attachments !== undefined && email.attachments.length > 0, 'mail-list-unread': email.unread, 'mail-list-replied': !email.unread && email.answered}" ng-click="select(email)" ng-repeat="email in state.nav.currentFolder.messages | orderBy:'uid':true | filter:searchText">
         <h3>{{email.from[0].name || email.from[0].address}}</h3>
         <div class="head">
-          <div class="flag" data-icon="{{(!email.unread && email.answered) ? '&#xe002;' : ''}}" ng-click="markUnread(email); $event.stopPropagation()"></div>
+          <div class="flag" data-icon="{{(!email.unread && email.answered) ? '&#xe002;' : ''}}" ng-click="toggleUnread(email); $event.stopPropagation()"></div>
           <p class="subject">{{email.subject || 'No subject'}}</p>
           <time>{{email.sentDate | date:'mediumDate'}}</time>
         </div>