A lot of clean up of code.

app/js/app_idb.js

@@ -0,0 +1,57 @@
+async function load_idb_tables() {
+  console.log('****************** Load IDB Tables ******************');
+  console.log('Loading IDB tables...');
+  
+  localforage.config({
+    driver: localforage.INDEXEDDB,
+    version: 1,
+    name: idb_name
+  });
+  
+  tbl_event = await localforage.createInstance({
+    name: idb_name,
+    storeName: 'event',
+  });
+  console.log('tbl_event count: '+ await tbl_event.length());
+  tbl_event_key_count = await tbl_event.length();
+  
+  tbl_event_location = await localforage.createInstance({
+    name: idb_name,
+    storeName: 'event_location',
+  });
+  console.log('tbl_event_location count: '+ await tbl_event_location.length());
+  tbl_event_location_key_count = await tbl_event_location.length();
+  
+  tbl_event_session = await localforage.createInstance({
+    name: idb_name,
+    storeName: 'event_session',
+  });
+  console.log('tbl_event_session count: '+ await tbl_event_session.length());
+  tbl_event_session_key_count = await tbl_event_session.length();
+  
+  tbl_event_presentation = await localforage.createInstance({
+    name: idb_name,
+    storeName: 'event_presentation',
+  });
+  console.log('tbl_event_presentation count: '+ await tbl_event_presentation.length());
+  tbl_event_presentation_key_count = await tbl_event_presentation.length();
+  
+  tbl_event_presenter = await localforage.createInstance({
+    name: idb_name,
+    storeName: 'event_presenter',
+  });
+  console.log('tbl_event_presenter count: '+ await tbl_event_presenter.length());
+  tbl_event_presenter_key_count = await tbl_event_presenter.length();
+  
+  
+  tbl_event_file = await localforage.createInstance({
+    name: idb_name,
+    storeName: 'event_file',
+  });
+  console.log('tbl_event_file count: '+ await tbl_event_file.length());
+  tbl_event_file_key_count = await tbl_event_file.length();
+  
+  console.log('IDB tables have now been opened.');
+  
+  return true;
+}