TMDM-7478: init impl for consolidate interface for 'charts config'

TMDM-7478: code clean-up and refactoring

TMDM-7478: indent charts subgroup in Portlets Group

TMDM-7478: update for better alignment

- use less indenting side and spacing for 'charts' subgroup
- add proper spacing for 'Domain Config'
- code clean-up