added public holidays + updated templ to v0.3.960

DB/initdb/01_schema.sql

@@ -109,7 +109,12 @@ DROP TABLE IF EXISTS "s_feiertage";
 CREATE TABLE "s_feiertage" (
     "counter_id" serial PRIMARY KEY NOT NULL,
     "datum" date  NOT NULL,
-    "name" varchar(100) NOT NULL,
+    "name" varchar(100) NOT NULL
+);
+
+CREATE UNIQUE index feiertage_unique_pro_jahr on s_feiertage (
+    extract ( year from datum ),
+    name
 );
 
 -- Adds crypto extension