Database edit tables updates and fixes, remove all zero size index files

4dev/database/trigger/trg_edit_access.sql

@@ -1,9 +1,9 @@
-DROP TRIGGER trg_edit_access ON edit_access;
+DROP TRIGGER IF EXISTS trg_edit_access ON edit_access;
 CREATE TRIGGER trg_edit_access
 BEFORE INSERT OR UPDATE ON edit_access
 FOR EACH ROW EXECUTE PROCEDURE set_edit_generic();
 
-DROP TRIGGER trg_set_edit_access_uid ON edit_access;
+DROP TRIGGER IF EXISTS trg_set_edit_access_uid ON edit_access;
 CREATE TRIGGER trg_set_edit_access_uid
 BEFORE INSERT OR UPDATE ON edit_access
 FOR EACH ROW EXECUTE PROCEDURE set_edit_access_uid();