Support for email notifs

Add utility funcs in UserSettingsStore and pass threepids to Notifications so it can do email notif stuff

src/UserSettingsStore.js

@@ -77,4 +77,33 @@ module.exports = {
 
         return cli.setPassword(authDict, new_password);
     },
+
+    getEmailPusher: function(pushers, address) {
+        if (pushers === undefined) {
+            return undefined;
+        }
+        for (var i = 0; i < pushers.length; ++i) {
+            if (pushers[i].kind == 'email' && pushers[i].pushkey == address) {
+                return pushers[i];
+            }
+        }
+        return undefined;
+    },
+
+    hasEmailPusher: function(pushers, address) {
+        return this.getEmailPusher(pushers, address) !== undefined;
+    },
+
+    addEmailPusher: function(address) {
+        return MatrixClientPeg.get().setPusher({
+            kind: 'email',
+            app_id: "m.email",
+            pushkey: address,
+            app_display_name: 'Email Notifications',
+            device_display_name: address,
+            lang: navigator.language,
+            data: {},
+            append: true,  // We always append for email pushers since the email is not a device that would 'logged out' from
+        });
+    },
 };

src/components/structures/UserSettings.js

@@ -319,12 +319,12 @@ module.exports = React.createClass({
             );
         }
         var notification_area;
-        if (!MatrixClientPeg.get().isGuest()) {
+        if (!MatrixClientPeg.get().isGuest() && this.state.threepids !== undefined) {
             notification_area = (<div>
                 <h2>Notifications</h2>
 
                 <div className="mx_UserSettings_section">
-                    <Notifications/>
+                    <Notifications threepids={this.state.threepids} />
                 </div>
             </div>);
         }