Update electron-builder.json files rule

- ".angular-cli.json" has been renamed in Angular 6 for "angular.json"
- Found out that some nested typscript files were still bundled

electron-builder.json

@@ -5,15 +5,15 @@
   },
     "files": [
         "**/*",
-        "!*.ts",
+        "!**/*.ts",
         "!*.code-workspace",
         "!LICENSE.md",
         "!package.json",
         "!package-lock.json",
         "!src/",
         "!e2e/",
         "!hooks/",
-        "!.angular-cli.json",
+        "!angular.json",
         "!_config.yml",
         "!karma.conf.js",
         "!tsconfig.json",