EMA

* adds Ema model (basically Compensation inherited)
* adds index view for EMAs
* fixes drop-down link bug for menu 'More' in navbar
* refactors some more forms to use process_request()
* adds modified attribute to BaseResource for easy last_modified check
* adds setting of modified attribute in all places where UserAction.EDITED is added to log
* adds EMA_ACCOUNT_IDENTIFIER_LENGTH and EMA_ACCOUNT_IDENTIFIER_TEMPLATE to ema/settings.py
* adds EmaAdmin to ema/admin.py
* fixes wrong title in intervention detail view html for revocations
* adds support for subtitle variable to BaseTable and generic_index.html
* drops next_version attribute from models
* adds/updates translations
* adds default ordering for UserActionLogEntry
   * removes extra ordering in log modal rendering

konova/urls.py

@@ -31,7 +31,7 @@ urlpatterns = [
     path('', home_view, name="home"),
     path('intervention/', include("intervention.urls")),
     path('compensation/', include("compensation.urls")),
-    path('ema/', include("intervention.urls")), #ToDo
+    path('ema/', include("ema.urls")),
     path('organisation/', include("organisation.urls")),
     path('user/', include("user.urls")),
     path('news/', include("news.urls")),