"Connected" should not be a switch

[acerspyro]

Unfortunately, GNOME Settings suffers from the same problem.

A Bluetooth connection is not a binary state. It can have multiple states, such as:

• Not connected
• Connecting
• Disconnecting
• Connected
• Connection failed

At the moment, the "off" state can indicate "Not connected" or "Connection failed", while the "on" state can indicate "Connected" or "Connecting".

Instead, the user should be provided with a button at the top of the page whose label changes from "Connect" to "Disconnect" with a useful glyph such as + and X, alongside a "Connection Status" label in the "Status Information" section. The connect / disconnect button should be disabled while connecting or disconnecting.

Pairing status also appears to be absent from the interface.