#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

compensation/migrations/0007_auto_20220531_1245.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.1.3 on 2022-05-31 10:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('compensation', '0006_ecoaccount_teams'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='compensation',
+            name='is_pik',
+            field=models.BooleanField(blank=True, default=False, help_text="Flag if compensation is a 'Produktonsintegrierte Kompensation'", null=True),
+        ),
+        migrations.AddField(
+            model_name='ecoaccount',
+            name='is_pik',
+            field=models.BooleanField(blank=True, default=False, help_text="Flag if compensation is a 'Produktonsintegrierte Kompensation'", null=True),
+        ),
+    ]