Add export by period

stages/fixtures/test_fixture.json

@@ -98,7 +98,7 @@
       "city": "La Sagne", 
       "first_name": "Andr\u00e9", 
       "last_name": "Allemand", 
-      "klass": 1, 
+      "klass": 2, 
       "pcode": "2314", 
       "birth_date": "1994-10-11",
       "archived": false
@@ -167,6 +167,17 @@
       "end_date": "2012-12-07"
     }
   }, 
+  {
+    "pk": 2, 
+    "model": "stages.period", 
+    "fields": {
+      "title": "Stage final",
+      "section": 1, 
+      "level": 2,
+      "start_date": "2013-02-01", 
+      "end_date": "2013-03-15"
+    }
+  }, 
   {
     "pk": 1, 
     "model": "stages.availability", 
@@ -174,7 +185,7 @@
       "corporation": 1, 
       "domain": 1, 
       "period": 1, 
-      "comment": ""
+      "comment": "Dispo pour pré-sensibilisation"
     }
   }, 
   {
@@ -187,6 +198,16 @@
       "comment": ""
     }
   }, 
+  {
+    "pk": 3, 
+    "model": "stages.availability", 
+    "fields": {
+      "corporation": 1, 
+      "domain": 2, 
+      "period": 2, 
+      "comment": "Dispo pour stage final"
+    }
+  }, 
   {
     "pk": 1, 
     "model": "stages.training", 
@@ -196,5 +217,15 @@
       "referent": 1,
       "comment": ""
     }
+  },
+  {
+    "pk": 2, 
+    "model": "stages.training", 
+    "fields": {
+      "availability": 3, 
+      "student": 4, 
+      "referent": 1,
+      "comment": ""
+    }
   }
 ]