Upgrade to L5 + huge refactor + more. closes #2

New stuff:
- Signup + email confirmation.
- Updated authentication strategy with remember cookies. closes #5
- New search system with some example gambits! This is cool - check out
the source. Fulltext drivers will be implemented as decorators
overriding the EloquentPostRepository’s findByContent method.
- Lay down the foundation for bootstrapping the Ember app.
- Update Web layer’s asset manager to properly publish CSS/JS files.
- Console commands to run installation migrations and seeds.

Refactoring:
- New structure: move models, repositories, commands, and events into
their own namespaces, rather than grouping by entity.
- All events are classes.
- Use L5 middleware and command bus implementations.
- Clearer use of repositories and the Active Record pattern.
Repositories are used only for retrieval of ActiveRecord objects, and
then save/delete operations are called directly on those ActiveRecords.
This way, we don’t over-abstract at the cost of Eloquent magic, but
testing is still easy.
- Refactor of Web layer so that it uses the Actions routing
architecture.
- “Actor” concept instead of depending on Laravel’s Auth.
- General cleanup!

ember/app/controllers/signup.js

@@ -3,6 +3,19 @@ import Ember from 'ember';
 import ModalController from 'flarum/mixins/modal-controller';
 
 export default Ember.Controller.extend(ModalController, {
+  emailProviderName: Ember.computed('welcomeUser.email', function() {
+    if (!this.get('welcomeUser.email')) { return; }
+    return this.get('welcomeUser.email').split('@')[1];
+  }),
+
+  emailProviderUrl: Ember.computed('emailProviderName', function() {
+    return 'http://'+this.get('emailProviderName');
+  }),
+
+  welcomeStyle: Ember.computed('welcomeUser.color', function() {
+    return 'background:'+this.get('welcomeUser.color');
+  }),
+
   actions: {
     submit: function() {
       var data = this.getProperties('username', 'email', 'password');
@@ -12,15 +25,9 @@ export default Ember.Controller.extend(ModalController, {
 
       var user = this.store.createRecord('user', data);
 
-      return user.save().then(function() {
-        controller.get('session').authenticate('authenticator:flarum', {
-          identification: data.email,
-          password: data.password
-        }).then(function() {
-          controller.send('closeModal');
-          controller.send('sessionChanged');
-          controller.set('loading', false);
-        });
+      return user.save().then(function(user) {
+        controller.set('welcomeUser', user);
+        controller.set('loading', false);
       }, function(reason) {
         controller.set('loading', false);
       });