[mod] ui localization init - new dependency: flask-babel

requirements.txt

 flask
+flask-babel
 grequests
 lxml
 pyyaml

searx/webapp.py

 import cStringIO
 import os
 
-from searx import settings
 from flask import Flask, request, render_template
 from flask import url_for, Response, make_response, redirect
+from flask import send_from_directory
+
+from searx import settings
 from searx.engines import search, categories, engines, get_engines_stats
 from searx.utils import UnicodeWriter
-from flask import send_from_directory
 from searx.utils import highlight_content, html_to_text
 
+from flask.ext.babel import Babel
+
 
 app = Flask(
     __name__,
 
 app.secret_key = settings['server']['secret_key']
 
+babel = Babel(app)
+
 #TODO configurable via settings.yml
 favicons = ['wikipedia', 'youtube', 'vimeo', 'soundcloud',
             'twitter', 'stackoverflow', 'github']
 '''
 
 
+@babel.localeselector
+def get_locale():
+    return request.accept_languages.best_match(settings['languages'].keys())
+
+
 def get_base_url():
     if settings['server']['base_url']:
         hostname = settings['server']['base_url']

setup.py

     zip_safe=False,
     install_requires=[
         'flask',
+        'flask-babel',
         'grequests',
         'lxml',
         'pyyaml',

versions.cfg

 [versions]
 Flask = 0.10.1
+Flask-Babel = 0.9
 Jinja2 = 2.7.2
 MarkupSafe = 0.18
 WebOb = 1.3.1