Changing version of terser dependency

Changing version of terser dependency since it was throwing an error during prod compilaton. See: angular/angular-cli#13582

I also realized I accidentally had a reference to a 'type' field in the car timer component, so removing that.

Author: ericrbaker

package-lock.json

@@ -31,6 +31,7 @@
     "jquery": "^3.3.1",
     "path": "^0.12.7",
     "rxjs": "~6.3.3",
+    "terser": "^3.14.1",
     "tslib": "^1.9.0",
     "typescript": "~3.2.2",
     "zone.js": "~0.8.26"

package.json

@@ -7,7 +7,7 @@ <h3>{{title}}</h3>
   <form>
   <div class="form-group row">
       <div class="col-lg-12">
-          <input type="button" class="btn btn-primary" id="{{type}}-updateCarBtn" value="Update Car Delivery Timer" (click)='startTimer()'/>
+        <input type="button" class="btn btn-primary" id="updateCarBtn" value="Update Car Delivery Timer" (click)='startTimer()'/>
       </div>
   </div>
   <div class="form-group row">