Chore: Enable Users to create multiple accounts (#440)

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

Co-authored-by: Sojan Jose <sojan@pepalo.com>
Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>

.rubocop.yml

@@ -41,6 +41,9 @@ RSpec/NestedGroups:
   Max: 4
 RSpec/MessageSpies:
   Enabled: false
+Rails/BulkChangeTable:
+  Exclude:
+    - 'db/migrate/20200121190901_create_account_users.rb'
 AllCops:
   Exclude:
     - db/*