[Feature] Email collect message hooks (#331)

- Add email collect hook on creating conversation
- Merge contact if it already exist

spec/controllers/widgets_controller_spec.rb

@@ -0,0 +1,17 @@
+require 'rails_helper'
+
+describe '/widget', type: :request do
+  let(:web_widget) { create(:channel_widget) }
+
+  describe 'GET /widget' do
+    it 'renders the page correctly when called with website_token' do
+      get widget_url(website_token: web_widget.website_token)
+      expect(response).to be_successful
+    end
+
+    it 'returns 404 when called with out website_token' do
+      get widget_url
+      expect(response.status).to eq(404)
+    end
+  end
+end