Up arrow and downn arrow keys should be reversed in Voice Settings dialog sliders

[jteh]

IN the sliders for the speech parameters in the Voice Settings dialog, the up arrow key decreases the setting and down arrow increases it. This is not logical, as these are simple numeric settings, so up should increase and down should decrease. This also makes these sliders consistent with the synth settings ring.

The left and right arrow keys are fine as they are.