[enh] date formatting by locale

# import htmlentitydefs

import locale

import dateutil.parser

import cStringIO

import csv

import os

import re

from codecs import getincrementalencoder

from HTMLParser import HTMLParser

from random import choice

from searx.version import VERSION_STRING

from searx import settings

from searx import logger

import cStringIO

import csv

import os

import re

logger = logger.getChild('utils')

ua_versions = ('29.0',

               '30.0',

                f = os.path.join(directory[base_path_length:], filename)

                result_templates.add(f)

    return result_templates

def format_date_by_locale(date_string, locale_string):

    # strftime works only on dates after 1900

    parsed_date = dateutil.parser.parse(date_string)

    if parsed_date.year <= 1900:

        return parsed_date.isoformat().split('T')[0]

    orig_locale = locale.getlocale()[0]

    try:

        locale.setlocale(locale.LC_ALL, locale_string)

    except:

        logger.warning('cannot set locale: {0}'.format(locale_string))

    formatted_date = parsed_date.strftime(locale.nl_langinfo(locale.D_FMT))

    try:

        locale.setlocale(locale.LC_ALL, orig_locale)

    except:

        logger.warning('cannot set original locale: {0}'.format(orig_locale))

    return formatted_date