Easy fixes tempo editor and a typo

You should at least be able to hear the metronome when you are using the slider to make tempo changes in Tempo editor. It’s no use without that.

Fix wording when adding a fade out. Should say “fade out from cursor” not “…to cursor”

Why aren’t tempo events listed as an optional left pane in tempo editor. They even exist in the Project browser which could use some love. Lol