[enh] py3 compatibility

searx/plugins/https_rewrite.py

@@ -16,14 +16,17 @@ along with searx. If not, see < http://www.gnu.org/licenses/ >.
 '''
 
 import re
-from urlparse import urlparse
+import sys
 from lxml import etree
 from os import listdir, environ
 from os.path import isfile, isdir, join
 from searx.plugins import logger
 from flask_babel import gettext
 from searx import searx_dir
+from searx.url_utils import urlparse
 
+if sys.version_info[0] == 3:
+    unicode = str
 
 name = "HTTPS rewrite"
 description = gettext('Rewrite HTTP links to HTTPS if possible')