Intervention revocation

* adds Revocation model to interventions/models.py
* adds revocations to interventions detail view
* fixes duplicated ids in html includes
* refactors controls for detail view into included template files (controls.html)
* reduces max length for payment transfer notes from 1000 to 200
* adds RevocationAdmin to intervention/admin.py
* adds new form for adding a Revocation to an intervention's legal_data
  * only one revocation per intervention possible
  * removes add button in case of an existing revocation
* adds revocation routes to intervention app
* renames document field in Document model into file for more clarity
* adds/updates translations

intervention/urls.py

@@ -8,7 +8,7 @@ Created on: 30.11.20
 from django.urls import path
 
 from intervention.views import index_view, new_view, open_view, edit_view, remove_view, new_document_view, share_view, \
-    create_share_view
+    create_share_view, remove_revocation_view, new_revocation_view
 
 app_name = "intervention"
 urlpatterns = [
@@ -20,4 +20,8 @@ urlpatterns = [
     path('<id>/remove', remove_view, name='remove'),
     path('<id>/share/<token>', share_view, name='share'),
     path('<id>/share', create_share_view, name='share-create'),
+
+    # Revocation routes
+    path('<id>/revocation/new', new_revocation_view, name='revocation-new'),
+    path('revocation/<id>/remove', remove_revocation_view, name='revocation-remove'),
 ]