#158 is_pik added

* adds model and form mixin for PIK
* integrates mixins for compensation, ema and ecoaccount
* adds migration files
* extends API
* extends API test data
* adds is_xy fields to compensation, ema and ecoaccount reports
* adds is_pik information to detail views
* adds/updates translations

api/tests/v1/update/compensation_update_put_body.json

@@ -46,6 +46,7 @@
         "title": "TEST_compensation_CHANGED",
         "is_cef": true,
         "is_coherence_keeping": true,
+        "is_pik": true,
         "intervention": "CHANGE_BEFORE_RUN!!!",
         "before_states": [],
         "after_states": [],