[fix] unescape htmlentities in wolframalpha_noapi's answer

searx/engines/wolframalpha_noapi.py

 from json import loads
 from urllib import urlencode
 from lxml import html
+import HTMLParser
 
 # search-url
 url = 'http://www.wolframalpha.com/'
         # extract answer from json
         answer = line[line.find('{'):line.rfind('}')+1]
         answer = loads(answer.encode('unicode-escape'))
-        answer = answer['stringified'].decode('unicode-escape')
+        answer = answer['stringified']
+
+        # clean plaintext answer
+        h = HTMLParser.HTMLParser()
+        answer = h.unescape(answer.decode('unicode-escape'))
         answer = sub(r'\\', '', answer)
 
         results.append({'answer': answer})

searx/settings.yml

     # You can use the engine using the official stable API, but you need an API key
     # See : http://products.wolframalpha.com/api/
     #    engine : wolframalpha_api
-    #    api_key: '5952JX-X52L3VKWT8' # required!
+    #    api_key: '' # required!
     engine : wolframalpha_noapi
     timeout: 6.0
+    disabled : True
 
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 #  - name : blekko images