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/controllers/api/v1/accounts/labels_controller.rb

@@ -0,0 +1,10 @@
+class Api::V1::Accounts::LabelsController < Api::BaseController
+  # list all labels in account
+  def index
+    @labels = current_account.all_conversation_tags
+  end
+
+  def most_used
+    @labels = ActsAsTaggableOn::Tag.most_used(params[:count] || 10)
+  end
+end