FEATURE: Ship default queries with the Data Explorer

Load default queries from queries.rb and save when run.
Each time a query is run, it picks up changes from queries.rb.

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

@@ -8,6 +8,7 @@ const NoQuery = Query.create({name: "No queries", fake: true});
 export default Ember.Controller.extend({
   queryParams: { selectedQueryId: "id" },
   selectedQueryId: null,
+  editDisabled: false,
   showResults: false,
   hideSchema: false,
   loading: false,
@@ -33,6 +34,7 @@ export default Ember.Controller.extend({
     const id = parseInt(this.get('selectedQueryId'));
     const item = this.get('content').find(q => q.get('id') === id);
     !isNaN(id) ? this.set('showRecentQueries', false) : this.set('showRecentQueries', true);
+    if (id < 0) this.set('editDisabled', true);
     return item || NoQuery;
   }.property('selectedQueryId'),
 
@@ -103,6 +105,7 @@ export default Ember.Controller.extend({
         asc: null,
         order: null,
         showResults: false,
+        editDisabled: false,
         selectedQueryId: null,
         sortBy: ['last_run_at:desc']
       });

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

@@ -43,7 +43,9 @@
               <div class="name">
                 {{d-button action="goHome" icon="chevron-left" class="previous"}}
                 <h1>{{selectedItem.name}}
-                <a {{action "editName" class="edit-query-name"}}>{{d-icon "pencil"}}</a>
+                  {{#unless editDisabled}}
+                    <a {{action "editName" class="edit-query-name"}}>{{d-icon "pencil"}}</a>
+                  {{/unless}}
                 </h1>
               </div>
               <div class="desc">
@@ -77,7 +79,9 @@
               {{#if everEditing}}
                 {{d-button action="save" label="explorer.save" disabled=saveDisabled class="btn-primary"}}
               {{else}}
-                {{d-button action="editName" label="explorer.edit" icon="pencil" class="btn-primary"}}
+                {{#unless editDisabled}}
+                  {{d-button action="editName" label="explorer.edit" icon="pencil" class="btn-primary"}}
+                {{/unless}}
               {{/if}}
               {{d-button action="download" label="explorer.export" disabled=runDisabled icon="download"}}
             </div>
@@ -88,7 +92,9 @@
                 {{#if everEditing}}
                   {{d-button action="discard" class="btn-danger" icon="undo" label="explorer.undo" disabled=saveDisabled}}
                 {{/if}}
-                {{d-button action="destroy" class="btn-danger" icon="trash" label="explorer.delete"}}
+                {{#unless editDisabled}}
+                  {{d-button action="destroy" class="btn-danger" icon="trash" label="explorer.delete"}}
+                {{/unless}}
               {{/if}}
             </div>
             <div class="clear"></div>