fix(@angular/cli): don't set baseUrl in editor tsconfig

Fix https://github.com/angular/angular-cli/issues/5875

packages/@angular/cli/blueprints/ng/files/__path__/tsconfig.app.json

@@ -2,8 +2,8 @@
   "extends": "<%= relativeRootPath %>/tsconfig.json",
   "compilerOptions": {
     "outDir": "<%= relativeRootPath %>/out-tsc/app",
+    "baseUrl": "./",
     "module": "es2015",
-    "baseUrl": "",
     "types": []
   },
   "exclude": [

packages/@angular/cli/blueprints/ng/files/__path__/tsconfig.spec.json

@@ -2,9 +2,9 @@
   "extends": "<%= relativeRootPath %>/tsconfig.json",
   "compilerOptions": {
     "outDir": "<%= relativeRootPath %>/out-tsc/spec",
+    "baseUrl": "./",
     "module": "commonjs",
     "target": "es5",
-    "baseUrl": "",
     "types": [
       "jasmine",
       "node"

packages/@angular/cli/blueprints/ng/files/e2e/tsconfig.e2e.json

@@ -2,6 +2,7 @@
   "extends": "../tsconfig.json",
   "compilerOptions": {
     "outDir": "../out-tsc/e2e",
+    "baseUrl": "./",
     "module": "commonjs",
     "target": "es5",
     "types": [

packages/@angular/cli/blueprints/ng/files/tsconfig.json

@@ -2,7 +2,6 @@
   "compileOnSave": false,
   "compilerOptions": {
     "outDir": "./dist/out-tsc",
-    "baseUrl": "src",
     "sourceMap": true,
     "declaration": false,
     "moduleResolution": "node",