Update Polymer components.

third_party/polymer/bower.json

 {
   "name": "catapult",
   "private": true,
   "dependencies": {
     "iron-collapse": "PolymerElements/iron-collapse#^1.0.0",
     "paper-icon-button": "PolymerElements/paper-icon-button#^1.0.0",
     "iron-icon": "PolymerElements/iron-icon#^1.0.0",
     "iron-icons": "PolymerElements/iron-icons#^1.0.0",
     "paper-item": "PolymerElements/paper-item#^1.0.0",
     "paper-menu": "PolymerElements/paper-menu#^1.0.0",
     "iron-form": "PolymerElements/iron-form#^1.0.0",
     "iron-overlay-behavior": "PolymerElements/iron-overlay-behavior#^1.0.0",
     "iron-selector": "PolymerElements/iron-selector#^1.0.0",
     "paper-button": "PolymerElements/paper-button#^1.0.0",
     "paper-checkbox": "PolymerElements/paper-checkbox#^1.0.0",
     "paper-dialog": "PolymerElements/paper-dialog#^1.0.0",
     "paper-dropdown-menu": "PolymerElements/paper-dropdown-menu#^1.0.0",
     "paper-input": "PolymerElements/paper-input#^1.0.0",
     "paper-spinner": "PolymerElements/paper-spinner#^1.0.0",
-    "paper-tabs": "PolymerElements/paper-tabs#^2.0.0",
+    "paper-tabs": "PolymerElements/paper-tabs#^1.0.0",
     "paper-toast": "PolymerElements/paper-toast#^1.0.0",
     "paper-tooltip": "PolymerElements/paper-tooltip#^1.0.0",
     "polymer": "Polymer/polymer#^1.0.0",
     "paper-listbox": "polymerelements/paper-listbox#^1.1.2",
-    "app-route": "PolymerElements/app-route#^0.9.3",
+    "app-route": "PolymerElements/app-route#^1.0.0",
     "iron-pages": "PolymerElements/iron-pages#^1.0.8",
     "paper-radio-button": "PolymerElements/paper-radio-button#^1.0.0",
     "paper-radio-group": "PolymerElements/paper-radio-group#^1.0.0"
   }
 }