Add-on settings: separate broadcast profiles panel into its own dialog

[josephsl]

Hi,

Stemming from #128 Back when broadcast profiles were first implemented (2015), broadcast profiles were listed on the landing page of add-on settings dialog. In 2018, it became a panel of its own. However, it has become clear that reliance on broadcast profiles panel (specifically, postSave method) for dealing with saving changes to profiles has become an issue. Specifically:

• Settings saved to wrong profiles when selecting a different profile.
• Various issues with time-based broadcast profiles, specifically restarting trigger timer.

Thus it is proposed that broadcast profiles panel will be transformed from a panel into a separate dialog. This will:

• Allow separation of add-on settings from profiles management, mimicking NVDA Core's approach to settings management.
• Make settings panels independent of each other.

Thanks.

[josephsl]

Hi,

As part of this work, related items will be removed, including:

• Config apply only flag (mostly meant for use by broadcast profiles panel)
• Config renamed/deleted action notification

Thanks.