Fl_Blink_Button: Don't add a new timer if one already exists.
Timeline: Don't attempt to build peaks for dummy sources.
Timeline: Fix desktop file.
Timeline: Report name as non-daw when invoked as such, as non-timeline otherwise.
Timeline: Fix sign error allowing the beginning of mutliple region selection to be dragged to a position earlier than frame 0.
Timeline: Fix sign warnings in grid snapping code.
Update NTK.