JS: use the '>' and '<' keys when the Control Panel has the focus
JS: use the '>' and '<' keys when the Control Panel has the focus

The control panel's focus always returns to the 'Run/Pause' button. This
button, not the GUIFrame itself, must listen for the keystrokes.

Signed-off-by: Harry King <409587b9e6671aa0763646191d292852dc49a658@gmail.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim