Load message list over JSON

- Add jquery-load-template to bower
- Add moment (date rendering) to bower
- Load message list JSON via /api/v1/mailbox
- Render message list using jquery template
- Fix resize related problems with message list height caused by
  2092949dbc

themes/bootstrap/public/bower_components/moment/bower.json

@@ -0,0 +1,22 @@
+{
+  "name": "moment",
+  "main": "moment.js",
+  "ignore": [
+    "**/.*",
+    "benchmarks",
+    "bower_components",
+    "meteor",
+    "node_modules",
+    "scripts",
+    "tasks",
+    "test",
+    "component.json",
+    "composer.json",
+    "CONTRIBUTING.md",
+    "ender.js",
+    "Gruntfile.js",
+    "Moment.js.nuspec",
+    "package.js",
+    "package.json"
+  ]
+}