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

third_party/polymer/v1_0/components-chromium/paper-icon-button/bower.json

 {
   "name": "paper-icon-button",
   "private": true,
-  "version": "1.0.2",
+  "version": "1.0.3",
   "license": "http://polymer.github.io/LICENSE.txt",
   "description": "A material design icon button",
   "main": "paper-icon-button.html",
   "author": [
     "The Polymer Authors"
   ],
   "keywords": [
     "web-components",
     "polymer",
     "button",
     "icon",
     "control"
   ],
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/PolymerElements/paper-icon-button.git"
+  },
   "dependencies": {
     "iron-flex-layout": "polymerelements/iron-flex-layout#^1.0.0",
     "iron-icon": "polymerelements/iron-icon#^1.0.0",
     "iron-icons": "polymerelements/iron-icons#^1.0.0",
     "paper-behaviors": "polymerelements/paper-behaviors#^1.0.0",
     "paper-ripple": "polymerelements/paper-ripple#^1.0.0",
     "paper-styles": "polymerelements/paper-styles#^1.0.0",
     "polymer": "Polymer/polymer#^1.0.0"
   },
   "devDependencies": {
     "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"
   }
 }