Actions: Add "No Action" as a viable action (1 of 2)

Due to popular user demand, we bring this in. This allows
"no action" to be set even if the input interface has an
assigned default action.

PS2: add "No action" check to NxActions
     Next actions refresh, this should all be handled
     by action handler. There's too much local
     implementation going on with all this.

PS3 PWM: properly check for
    CFXConstants.SYSTEMUI_TASK_NO_ACTION
    If we are checking for "doubleTapEnabled()" that
    constant should be checked as !CFXConstants.SYSTEMUI_TASK_NO_ACTION.equals(theAction)

Change-Id: Ia4009aa4c363c744524ef15f7c049fc6f993f77b