post an empty array to remove an array from settings

domain-server/resources/web/js/settings.js

@@ -102,8 +102,15 @@ $(document).ready(function(){
       row.empty()
       row.html("<input type='hidden' class='form-control' name='" + row.attr("name") + "' data-changed='true' value=''>");
     } else {      
-      // just remove this row completely - the removal of the hidden input will remove it from the array on post
-      row.remove()
+      if (table.children('tr.row-data').length) {
+        // this isn't the last row - we can just remove it
+        row.remove()
+      } else {
+        // this is the last row, we can't remove it completely since we need to post an empty array
+        row.empty()
+        row.html("<input type='hidden' class='form-control' name='" + table.attr("name").replace('[]', '') 
+          + "' data-changed='true' value=''>");
+      }
       
       // we need to fire a change event on one of the remaining inputs so that the sidebar badge is updated
       badgeSidebarForDifferences($(table))

domain-server/src/DomainServerSettingsManager.cpp

@@ -295,6 +295,8 @@ void DomainServerSettingsManager::updateSetting(const QString& key, const QJsonV
 void DomainServerSettingsManager::recurseJSONObjectAndOverwriteSettings(const QJsonObject& postedObject,
                                                                         QVariantMap& settingsVariant,
                                                                         const QJsonArray& descriptionArray) {
+    
+    qDebug() << postedObject;
     // Iterate on the setting groups
     foreach(const QString& groupKey, postedObject.keys()) {
         QJsonValue groupValue = postedObject[groupKey];