added locale option for moment

[lindesvard]

I want to be able to specify which language moment should use. And you can utilize this even more. For example you can get all the month/week names from moment instead opt-in value.

const moment = require('moment');

moment.locale('sv'); // Swedish

moment.weekdays()

[ 'söndag',  'måndag',  'tisdag',  'onsdag',  'torsdag',  'fredag',  'lördag' ]

moment.weekdaysShort()

[ 'sön', 'mån', 'tis', 'ons', 'tor', 'fre', 'lör' ]

moment.months()

[ 'januari',  'februari',  'mars',  'april',  'maj',  'juni',  'juli',  'augusti',  'september',  'oktober',  'november',  'december' ]

moment.monthsShort()

[ 'jan',  'feb',  'mar',  'apr',  'maj',  'jun',  'jul',  'aug',  'sep',  'okt',  'nov',  'dec' ]

Best regards
CG