[Intervention] Revocations files optional #4

* makes revocation file upload optional
 * adds overview about revocations to intervention index
 * adds/updates translations

intervention/tables.py

@@ -13,7 +13,7 @@ from django.utils.translation import gettext_lazy as _
 
 from intervention.filters import InterventionTableFilter
 from intervention.models import Intervention
-from konova.sub_settings.django_settings import DEFAULT_DATE_TIME_FORMAT
+from konova.sub_settings.django_settings import DEFAULT_DATE_TIME_FORMAT, DEFAULT_DATE_FORMAT
 from konova.utils.tables import BaseTable
 import django_tables2 as tables
 
@@ -41,6 +41,12 @@ class InterventionTable(BaseTable):
         empty_values=[],
         accessor="recorded",
     )
+    rev = tables.Column(
+        verbose_name=_("Revocation"),
+        orderable=True,
+        empty_values=[],
+        accessor="legal__revocation",
+    )
     e = tables.Column(
         verbose_name=_("Editable"),
         orderable=True,
@@ -52,16 +58,6 @@ class InterventionTable(BaseTable):
         orderable=True,
         accessor="modified__timestamp",
     )
-    """
-    # ToDo: Decide to keep actions column or to dismiss them
-    
-    ac = tables.Column(
-        verbose_name=_("Actions"),
-        orderable=False,
-        empty_values=[],
-        attrs={"td": {"class": "action-col"}}
-    )
-    """
 
     class Meta(BaseTable.Meta):
         template_name = "django_tables2/bootstrap4.html"
@@ -164,3 +160,29 @@ class InterventionTable(BaseTable):
             icn_class="fas fa-edit rlp-r-inv" if has_access else "far fa-edit",
         )
         return format_html(html)
+
+    def render_rev(self, value, record: Intervention):
+        """ Renders the revocation column for an intervention
+
+        Args:
+            value (str): The revocation value
+            record (Intervention): The intervention record
+
+        Returns:
+
+        """
+        html = ""
+        exists = value is not None
+        tooltip = _("No revocation")
+        if exists:
+            _date = value.date
+            added_ts = localtime(value.created.timestamp)
+            added_ts = added_ts.strftime(DEFAULT_DATE_TIME_FORMAT)
+            on = _date.strftime(DEFAULT_DATE_FORMAT)
+            tooltip = _("Revocation from {}, added on {} by {}").format(on, added_ts, value.created.user)
+        html += self.render_stop(
+            tooltip=tooltip,
+            icn_filled=exists,
+        )
+        return format_html(html)
+