Update bower.json for Polymer elements and add PRESUBMIT.py

third_party/polymer/v1_0/components-chromium/neon-animation/bower.json

 {
   "name": "neon-animation",
-  "version": "1.0.1",
+  "version": "1.0.4",
   "authors": [
     "The Polymer Authors"
   ],
   "keywords": [
     "web-components",
     "web-component",
     "polymer",
     "web-animations"
   ],
   "main": [
+    "neon-animated-pages.html",
     "neon-animatable-behavior.html",
     "neon-animation-behavior.html",
     "neon-animation-runner-behavior.html",
     "neon-shared-element-animatable-behavior.html",
     "neon-shared-element-animation-behavior.html",
-    "neon-animated-pages.html",
     "neon-animatable.html",
     "neon-animations.html"
   ],
   "private": true,
   "repository": {
     "type": "git",
     "url": "git://github.com/PolymerElements/neon-animation"
   },
   "license": "http://polymer.github.io/LICENSE.txt",
   "homepage": "https://github.com/PolymerElements/neon-animation",
   "ignore": [],
   "dependencies": {
     "polymer": "Polymer/polymer#^1.0.0",
     "iron-meta": "PolymerElements/iron-meta#^1.0.0",
     "iron-resizable-behavior": "PolymerElements/iron-resizable-behavior#^1.0.0",
     "iron-selector": "PolymerElements/iron-selector#^1.0.0",
     "paper-styles": "PolymerElements/paper-styles#^1.0.0",
-    "web-animations-js": "web-animations/web-animations-js#^2.0.0"
+    "web-animations-js": "web-animations/web-animations-js#2.1.0"
   },
   "devDependencies": {
     "iron-flex-layout": "PolymerElements/iron-flex-layout#^1.0.0",
     "paper-toolbar": "PolymerElements/paper-toolbar#^1.0.0",
     "iron-component-page": "PolymerElements/iron-component-page#^1.0.0",
     "test-fixture": "PolymerElements/test-fixture#^1.0.0",
     "web-component-tester": "*",
     "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0",
     "paper-item": "PolymerElements/paper-item#^1.0.0",
     "iron-icon": "PolymerElements/iron-icon#^1.0.0",
     "iron-icons": "PolymerElements/iron-icons#^1.0.0",
     "paper-icon-button": "PolymerElements/paper-icon-button#^1.0.0"
   }
 }