Add HTTPS warning

assets/javascripts/discourse/components/query-result.js.es6

@@ -46,8 +46,8 @@ const QueryResultComponent = Ember.Component.extend({
 
   columnHandlers: function() {
     const self = this;
-    if (!this.get('content')) {
-      return;
+    if (!this.get('columns')) {
+      return [];
     }
     if (self.get('opts.notransform')) {
       return this.get('columns').map(function(colName) {

assets/javascripts/discourse/controllers/admin-plugins-explorer.js.es6

@@ -35,6 +35,14 @@ export default Ember.ArrayController.extend({
     this.set('results', null);
   },
 
+  not_https: function() {
+    return !(
+      window.location.protocol === "https:" ||
+      window.location.hostname === "localhost" ||
+      window.location.hostname.endsWith(".local")
+    );
+  }.property(),
+
   actions: {
     dummy() {},
 

assets/javascripts/discourse/templates/admin/plugins-explorer.hbs

@@ -1,5 +1,12 @@
 <h2>Queries</h2>
 
+{{#if not_https}}
+  <div class="https-warning">
+    {{fa-icon "warning"}}
+    {{i18n "explorer.https_warning"}}
+  </div>
+{{/if}}
+
 <div class="query-list">
   {{combo-box valueAttribute="id" value=selectedQueryId nameProperty="listName" content=content castInteger="true" nameChanges="true"}}
   {{d-button action="showCreate" icon="plus" class="no-text"}}
@@ -19,8 +26,6 @@
   {{partial "admin/plugins-explorer-show" model=selectedItem}}
 </div>
 
-{{conditional-loading-spinner condition=loading}}
-
 <div class="query-run">
   {{#if selectedItem.param_names}}
     <div class="query-params">
@@ -44,6 +49,8 @@
 
 <hr>
 
+{{conditional-loading-spinner condition=loading}}
+
 {{#if results}}
   <div class="query-results">
     {{#if showResults}}