[TESTS] LANGUAGE integration, ok

Languages integration (only run once!).ipynb

 {
  "metadata": {
   "name": "",
-  "signature": "sha256:cabaff3edb8995fecf78ead33fd8af0b9ada1fe75811cb60200317c70ea3079e"
+  "signature": "sha256:0383da299037d14e20f4be4cd7703cfddbdf0f947ee8f93f051f2ed6b7fe0cb5"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -18,7 +18,7 @@
      "language": "python",
      "metadata": {},
      "outputs": [],
-     "prompt_number": 5
+     "prompt_number": 1
     },
     {
      "cell_type": "code",
@@ -37,7 +37,27 @@
      "language": "python",
      "metadata": {},
      "outputs": [],
-     "prompt_number": 10
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "Language.objects.filter(implemented=1)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 3,
+       "text": [
+        "[<Language: English>, <Language: French>]"
+       ]
+      }
+     ],
+     "prompt_number": 3
     },
     {
      "cell_type": "code",