[Bug]: TimeItem does not pickup defaultValue in default mode

[dencel]

Using version: v110p_2016-08-22_LGPL

Problem
Defaultvalue is ignored using a TimeItem.

Solution
Add null check on setValue of TimeItem and change to defaultValue if null
ISC_Forms.js@59730

        var newValue = value;
        if (isc.isA.String(newValue)) {
            var timeVal = isc.Time.parseInput(newValue, true);
            // If it doesn't parse to a meaningful time, keep it as a string - may be
            // an expression or similar.
            if (isc.isA.Date(timeVal)) newValue = timeVal;
        }
        var setToDefault = false;
        if (newValue == null) {
            var defaultValue = this.getDefaultValue();
            var undef;
            if (defaultValue !== undef) {
                newValue = defaultValue;
                setToDefault = true;
            }
        }