Integrated media in results + Deezer Engine

New "embedded" item for the results, allow to give an iframe to display the media directly in the results.
Note that the attributes src of the iframes are not set, but instead data-src is set, allowing to only load the iframe when clicked.

Deezer engine based on public API (no key).

searx/engines/deezer.py

@@ -0,0 +1,62 @@
+## Deezer (Music)
+#
+# @website     https://deezer.com
+# @provide-api yes (http://developers.deezer.com/api/)
+#
+# @using-api   yes
+# @results     JSON
+# @stable      yes
+# @parse       url, title, content, embedded
+
+from json import loads
+from urllib import urlencode
+
+# engine dependent config
+categories = ['music']
+paging = True
+
+# search-url
+url = 'http://api.deezer.com/'
+search_url = url + 'search?{query}&index={offset}'
+
+embedded_url = '<iframe scrolling="no" frameborder="0" allowTransparency="true" ' +\
+    'data-src="http://www.deezer.com/plugins/player?type=tracks&id={audioid}" ' +\
+    'width="540" height="80"></iframe>'
+
+
+# do search-request
+def request(query, params):
+    offset = (params['pageno'] - 1) * 25
+
+    params['url'] = search_url.format(query=urlencode({'q': query}),
+                                      offset=offset)
+
+    return params
+
+
+# get response from search-request
+def response(resp):
+    results = []
+
+    search_res = loads(resp.text)
+
+    # parse results
+    for result in search_res.get('data', []):
+        if result['type'] == 'track':
+            print result
+            title = result['title']
+            url = result['link']
+            content = result['artist']['name'] +\
+                " &bull; " +\
+                result['album']['title'] +\
+                " &bull; " + result['title']
+            embedded = embedded_url.format(audioid=result['id'])
+
+            # append result
+            results.append({'url': url,
+                            'title': title,
+                            'embedded': embedded,
+                            'content': content})
+
+    # return results
+    return results