Enhancement: Paginate conversation calls in tabs (#560)

* Use conversationPage module for pagination

* Load more conversations

* Reset list if conversation status is changed

* Add specs to conversationPage

* Reset filter when page is re-mounted

* Update text

* Update text

app/views/api/v1/contacts/conversations/index.json.jbuilder

@@ -17,7 +17,7 @@ json.payload do
       json.messages conversation.unread_messages.map(&:push_event_data)
     end
     json.inbox_id conversation.inbox_id
-    json.status conversation.status_before_type_cast
+    json.status conversation.status
     json.timestamp conversation.messages.last.try(:created_at).try(:to_i)
     json.user_last_seen_at conversation.user_last_seen_at.to_i
     json.agent_last_seen_at conversation.agent_last_seen_at.to_i

app/views/api/v1/conversations/index.json.jbuilder

@@ -24,7 +24,7 @@ json.data do
         json.messages conversation.unread_messages.map(&:push_event_data)
       end
       json.inbox_id conversation.inbox_id
-      json.status conversation.status_before_type_cast
+      json.status conversation.status
       json.timestamp conversation.messages.last.try(:created_at).try(:to_i)
       json.user_last_seen_at conversation.user_last_seen_at.to_i
       json.agent_last_seen_at conversation.agent_last_seen_at.to_i

app/views/api/v1/conversations/toggle_status.json.jbuilder

@@ -3,6 +3,6 @@ end
 
 json.payload do
   json.success @status
-  json.current_status @conversation.status_before_type_cast
+  json.current_status @conversation.status
   json.conversation_id @conversation.display_id
 end