Feature: Contact Panel with conversation details (#397)

* Add Contact panel changes

* Fix parent iframe blocked

* Add Conversation Panel, Contact messages

* Update contact panel with conversation details

* Update designs in sidebar

* Fix specs

* Specs: Add specs for conversationMetadata and contact modules

* Fix currentUrl issues

* Fix spelling

* Set default to empty string

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

@@ -4,6 +4,6 @@ json.payload do
     json.name contact.name
     json.email contact.email
     json.phone_number contact.phone_number
-    json.thumbnail contact.avatar.thumb.url
+    json.thumbnail contact.avatar.profile_thumb.url
   end
 end

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

@@ -1,5 +1,7 @@
 json.meta do
   json.labels @conversation.label_list
+  json.additional_attributes @conversation.additional_attributes
+  json.contact_id @conversation.contact_id
 end
 
 json.payload do