refactor: tidy structure of source files

Fixes #79

src/things/abstract/thing-in-place.ts

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 StApps
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+import {SCMetaTranslations} from '../../general/i18n';
+import {SCInPlace} from './place';
+import {SCThing, SCThingMeta} from './thing';
+
+/**
+ * A thing that is or happens in a place
+ */
+export interface SCThingInPlace
+  extends SCThing, SCInPlace {
+  // noop
+}
+
+/**
+ * Meta information about thing in a place
+ */
+export class SCThingInPlaceMeta
+  extends SCThingMeta implements SCMetaTranslations<SCThingInPlace> {
+  /**
+   * Translations of fields
+   */
+  fieldTranslations = {
+    de: {
+      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      inPlace: 'Ort',
+    },
+    en: {
+      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      inPlace: 'location',
+    },
+  };
+
+  /**
+   * Translations of values of fields
+   */
+  fieldValueTranslations = {
+    de: {
+      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+    },
+    en: {
+      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+    },
+  };
+}