BHV-12513 Modify sample to use pre selected locale as an initial value

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
BHV-12513 Use separate ilib.DateFmt instance for day
to use updated locale

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
BHV-12513 Change variable name to keep consistency

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
BHV-12513 Remove unnecessary Date formatter

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
BHV-12513 Change var name for better readability

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com