Move google jsapi initializer to component

This is in preparation for FastBoot. `didInsertElement` is not run when
rendering in FastBoot, so it’s fine to access `Ember.$`.

Author: locks

app/components/google-jsapi.js

@@ -0,0 +1,15 @@
+import Ember from 'ember';
+
+export default Ember.Component.extend({
+    didInsertElement() {
+        Ember.$.getScript('https://www.google.com/jsapi', function() {
+            window.google.load('visualization', '1.0', {
+                packages: ['corechart'],
+                callback() {
+                    window.googleChartsLoaded = true;
+                    Ember.$(document).trigger('googleChartsLoaded');
+                }
+            });
+        });
+    }
+});

app/initializers/google.js

@@ -1,4 +1,5 @@
 {{title "Cargo: packages for Rust" separator=' - ' prepend=true}}
+{{google-jsapi}}
 
 <a href='https://github.com/rust-lang/crates.io' class='fork-me'>
   <img src='/assets/forkme.png'/>