ENYO-554: Date TimePicker Samples Locale change poisons entire Sampler (ilib)

### Issue:
enyo-ilib/glue.js was not resetting enyo.Control.prototype.rtl for ltr locales
### Fix:
Set enyo.Control.prototype.rtl = false for ltr locales. Also, call enyo.updateLocale(locale), which is more complete, in the Date/Time Picker Samples instead of ilib.setLocale(locale)

Enyo-DCO-1.1-Signed-off-by: Krishna Rangarajan <krishna.rangarajan@lge.com>