Migrated to angular 8

Created dev configuration

src/assets/default.json

@@ -0,0 +1,22 @@
+{
+    "YoutubeDLMaterial": {
+        "Host": {
+            "frontendurl": "http://localhost:4200",
+            "backendurl": "http://localhost:17442/"
+        },
+      "Encryption": {
+        "use-encryption": false,
+        "cert-file-path": "/etc/letsencrypt/live/example.com/fullchain.pem",
+        "key-file-path": "/etc/letsencrypt/live/example.com/privkey.pem"
+      },
+      "Downloader": {
+        "path-base": "http://localhost:17442/",
+        "path-audio": "audio/",
+        "path-video": "video/"
+      },
+      "Extra": {
+        "title_top": "Youtube Downloader",
+		"file_manager_enabled": true
+      }
+    }
+  }

src/polyfills.ts

@@ -43,7 +43,6 @@
 
 /** Evergreen browsers require these. **/
 import 'core-js/es6/reflect';
-import 'core-js/es7/reflect';
 
 
 /** ALL Firefox browsers require the following to support `@angular/animation`. **/

src/tsconfig.app.json

@@ -2,7 +2,6 @@
   "extends": "../tsconfig.json",
   "compilerOptions": {
     "outDir": "../out-tsc/app",
-    "module": "es2015",
     "baseUrl": "",
     "types": []
   },

src/tsconfig.spec.json

@@ -1,20 +1,19 @@
-{
-  "extends": "../tsconfig.json",
-  "compilerOptions": {
-    "outDir": "../out-tsc/spec",
-    "module": "commonjs",
-    "target": "es5",
-    "baseUrl": "",
-    "types": [
-      "jasmine",
-      "node"
-    ]
-  },
-  "files": [
-    "test.ts"
-  ],
-  "include": [
-    "**/*.spec.ts",
-    "**/*.d.ts"
-  ]
-}
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../out-tsc/spec",
+    "baseUrl": "",
+    "types": [
+      "jasmine",
+      "node"
+    ]
+  },
+  "files": [
+    "test.ts",
+    "polyfills.ts"
+
+  ],
+  "include": [
+    "**/*.spec.ts",
+    "**/*.d.ts"
+  ]