Activity Action: Show settings to allow configuration of sync settings.
In some cases, a matching Activity may not exist, so ensure you safeguard against this.
The account types available to add via the add account button may be restricted by adding an Settings.ExtraAuthorities extra to this Intent with one or more syncable content provider's authorities. Only account types which can sync with that content provider will be offered to the user.
Input: Nothing.
Output: Nothing.