Bug: Fix conversation not loading from the links in email (#602)

Bug: Load conversation from links

app/controllers/api/v1/conversations/messages_controller.rb

@@ -1,8 +1,18 @@
 class Api::V1::Conversations::MessagesController < Api::BaseController
-  before_action :set_conversation, only: [:create]
+  before_action :set_conversation, only: [:index, :create]
+
+  def index
+    @messages = message_finder.perform
+  end
 
   def create
     mb = Messages::Outgoing::NormalBuilder.new(current_user, @conversation, params)
     @message = mb.perform
   end
+
+  private
+
+  def message_finder
+    @message_finder ||= MessageFinder.new(@conversation, params)
+  end
 end