~phablet-team/telephony-service/fix_account_status

- Add more properties to the .protocol files
- Expose method on dbus to leave all rooms from a certain account.

added added

removed removed

- ServiceName: TODO: add description

- ServiceDisplayName: TODO: add description

- JoinExistingChannels: enabled if this protocol suppors joining existing chats

- ReturnToSend: whether the UI should send messages when return or enter are pressed

- EnableAttachments: whether the UI should allow users to send attachments

- EnableRejoin: whether users can manually rejoin existing chats

- EnableTabCompletion: whether the UI should allow tab complation

- LeaveRoomsOnClose: whether the account should be disconnected when the UI is closed

- EnableChatStates: whether the UI should display chat states like user typing and so on