- add leaflet

- start with map-view.component: basic webgis functionalities

src/views/help-view/help-view-component.ts

@@ -0,0 +1,9 @@
+import { Options, Vue } from "vue-class-component";
+// import { Prop } from "vue-property-decorator";
+
+@Options({
+    name: "HelpViewComponent",
+})
+export default class HelpViewComponent extends Vue {
+    // results: Array<any> = [];
+}