dashboard next: minor tweaks

* help texts
* renaming of components to dashboard-*
* use number formatter
* adjust trend position

app/assets/javascripts/admin/components/dashboard-mini-table.js.es6

@@ -0,0 +1,43 @@
+import { ajax } from 'discourse/lib/ajax';
+import computed from 'ember-addons/ember-computed-decorators';
+
+export default Ember.Component.extend({
+  classNames: ["dashboard-mini-table"],
+
+  total: null,
+  labels: null,
+  title: null,
+  chartData: null,
+  isLoading: false,
+  help: null,
+  helpPage: null,
+
+  didInsertElement() {
+    this._super();
+
+    this.fetchReport.apply(this);
+  },
+
+  @computed("dataSourceName")
+  dataSource(dataSourceName) {
+    return `/admin/reports/${dataSourceName}`;
+  },
+
+  fetchReport() {
+    this.set("isLoading", true);
+
+    ajax(this.get("dataSource")).then((response) => {
+      const report = response.report;
+
+      this.setProperties({
+        labels: report.data.map(r => r.x),
+        dataset: report.data.map(r => r.y),
+        total: report.total,
+        title: report.title,
+        chartData: report.data
+      });
+    }).finally(() => {
+      this.set("isLoading", false);
+    });
+  }
+});