[enh][fix] update to latest dependencies ++ fix tests & travis test runner

WARNING: dependency changes

.travis.yml

   - ./manage.sh update_dev_packages
   - pip install coveralls
 script:
-  - ./manage.sh pep8_check
   - ./manage.sh styles
   - ./manage.sh grunt_build
+  - ./manage.sh tests
   - ./manage.sh py_test_coverage
-  - ./manage.sh robot_tests
 after_success:
   coveralls
 notifications:

requirements-dev.txt

-babel==2.2.0
-mock==1.0.1
+babel==2.3.4
+mock==2.0.0
 nose2[coverage-plugin]
 pep8==1.7.0
-plone.testing==4.0.15
+plone.testing==5.0.0
 robotframework-selenium2library==1.7.4
 robotsuite==1.7.0
 transifex-client==0.11

requirements.txt

-certifi==2015.11.20.1
-flask==0.10.1
-flask-babel==0.9
-lxml==3.5.0
-ndg-httpsclient==0.4.0
+certifi==2016.2.28
+flask==0.11.1
+flask-babel==0.11.1
+lxml==3.6.0
+ndg-httpsclient==0.4.1
 pyasn1==0.1.9
 pyasn1-modules==0.0.8
-pygments==2.0.2
+pygments==2.1.3
 pyopenssl==0.15.1
-python-dateutil==2.4.2
+python-dateutil==2.5.3
 pyyaml==3.11
-requests==2.9.1
+requests==2.10.0

searx/engines/__init__.py

 from os.path import realpath, dirname, splitext, join
 import sys
 from imp import load_source
-from flask.ext.babel import gettext
+from flask_babel import gettext
 from operator import itemgetter
 from searx import settings
 from searx import logger

searx/plugins/__init__.py

                            tracker_url_remover,
                            vim_hotkeys)
 
-required_attrs = (('name', str),
-                  ('description', str),
+required_attrs = (('name', (str, unicode)),
+                  ('description', (str, unicode)),
                   ('default_on', bool))
 
 optional_attrs = (('js_dependencies', tuple),

searx/plugins/https_rewrite.py

 from os import listdir, environ
 from os.path import isfile, isdir, join
 from searx.plugins import logger
-from flask.ext.babel import gettext
+from flask_babel import gettext
 from searx import searx_dir
 
 

searx/plugins/open_results_on_new_tab.py

 
 (C) 2016 by Adam Tauber, <asciimoo@gmail.com>
 '''
-from flask.ext.babel import gettext
+from flask_babel import gettext
 name = gettext('Open result links on new browser tabs')
 description = gettext('Results are opened in the same window by default. '
                       'This plugin overwrites the default behaviour to open links on new tabs/windows. '

searx/plugins/search_on_category_select.py

 
 (C) 2015 by Adam Tauber, <asciimoo@gmail.com>
 '''
-from flask.ext.babel import gettext
+from flask_babel import gettext
 name = gettext('Search on category select')
 description = gettext('Perform search immediately if a category selected. '
                       'Disable to select multiple categories. (JavaScript required)')

searx/plugins/self_info.py

 
 (C) 2015 by Adam Tauber, <asciimoo@gmail.com>
 '''
-from flask.ext.babel import gettext
+from flask_babel import gettext
 import re
 name = "Self Informations"
 description = gettext('Displays your IP if the query is "ip" and your user agent if the query contains "user agent".')

searx/plugins/tracker_url_remover.py

 (C) 2015 by Adam Tauber, <asciimoo@gmail.com>
 '''
 
-from flask.ext.babel import gettext
+from flask_babel import gettext
 import re
 from urlparse import urlunparse
 

searx/plugins/vim_hotkeys.py

-from flask.ext.babel import gettext
+from flask_babel import gettext
 
 name = gettext('Vim-like hotkeys')
 description = gettext('Navigate search results with Vim-like hotkeys '

searx/webapp.py

     Flask, request, render_template, url_for, Response, make_response,
     redirect, send_from_directory
 )
-from flask.ext.babel import Babel, gettext, format_date, format_decimal
+from flask_babel import Babel, gettext, format_date, format_decimal
 from flask.json import jsonify
 from searx import settings, searx_dir
 from searx.engines import (

tests/unit/test_webapp.py

                                                 suggestions=set(),
                                                 infoboxes=[],
                                                 results=self.test_results,
+                                                number_of_results=len(self.test_results),
                                                 results_length=lambda: len(self.test_results))
 
         webapp.Search.search = search_mock