Release v6.12.3

• (foxriver76) fixed problem that disabled checkbox is still clickable'
  '* (foxriver76) no longer replace valid common.adminUI.tab values of adapters'
  '* (foxriver76) fixed freeSolo option for autocomplete components'
  '* (foxriver76) fixed issue with jsonConfig sendTo with native option when returning multiple properties'
  '* (foxriver76) fixed empty dropdown selection after selecting system language in JsonConfig