update typescript settings

Author: Angular2Guy

carrental-web/src/main/angular/carrental/tsconfig.base.json

@@ -3,6 +3,9 @@
   "compilerOptions": {
     "baseUrl": "./",
     "outDir": "./dist/out-tsc",
+    "forceConsistentCasingInFileNames": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
     "sourceMap": true,
     "declaration": false,
     "downlevelIteration": true,