Chore: Scope URLs with account_id (#601)

* Chore: Enable Users to create multiple accounts

Addresses: #402
- migrations to split roles and other attributes from users table
- make changes in code to accommodate this change

Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>

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

@@ -1,10 +0,0 @@
-json.array! @agents do |agent|
-  json.account_id agent.account_id
-  json.availability_status agent.availability_status
-  json.confirmed agent.confirmed?
-  json.email agent.email
-  json.id agent.id
-  json.name agent.name
-  json.role agent.role
-  json.thumbnail agent.avatar_url
-end

app/views/devise/auth.json.jbuilder

@@ -1,14 +1,14 @@
 json.data do
-  json.id @resource.id
-  json.provider @resource.provider
-  json.uid @resource.uid
-  json.name @resource.name
-  json.nickname @resource.nickname
-  json.email @resource.email
-  json.account_id @resource.account.id
-  json.pubsub_token @resource.pubsub_token
-  json.role @resource.account_user.role
-  json.inviter_id @resource.account_user.inviter_id
-  json.confirmed @resource.confirmed?
-  json.avatar_url @resource.avatar_url
+  json.id resource.id
+  json.provider resource.provider
+  json.uid resource.uid
+  json.name resource.name
+  json.nickname resource.nickname
+  json.email resource.email
+  json.account_id resource.account.id
+  json.pubsub_token resource.pubsub_token
+  json.role resource.account_user.role
+  json.inviter_id resource.account_user.inviter_id
+  json.confirmed resource.confirmed?
+  json.avatar_url resource.avatar_url
 end