Show file recieve toggle in indicator

[Zisu Andrei]

There should be a toggle for activating the file recieve feature from the sharing plug in the bluetooth indicator.

I would argue the "discover devices" entry is not used often enough that users would need a shortcut to it, since the use case of bluetooth is, generally, that you have a small set of personal devices that you would use with it. Thus, this toggle can be added in its place.