Bump Babel to version 6

closes CNVS-29019
closes instructuregh-817

Test Plan:
 - bundle exec rake canvas:compile_assets should compile
   /app/jsx and /specs/javascripts/jsx properly
 - Automated tests should pass
 - Areas of Canvas that use JSX/ES6 should work properly such
   as Moderated Grading, Files, and the new Admin search page

Change-Id: Ic2aefbe98dd65a9b38407a68dc569e19a9e300e2
Reviewed-on: https://gerrit.instructure.com/78232
Tested-by: Jenkins
Reviewed-by: Steven Burnett <[email protected]>
Reviewed-by: Clay Diffrient <[email protected]>
QA-Review: Heath Hales <[email protected]>
Product-Review: Clay Diffrient <[email protected]>

.babelrc

@@ -0,0 +1,4 @@
+{
+  "presets": ["es2015", "react", "stage-1"],
+  "plugins": ["add-module-exports"]
+}

package.json

@@ -9,9 +9,14 @@
     "brandable_css": "0.0.67"
   },
   "devDependencies": {
-    "babel": "^5.8.23",
-    "babel-core": "^5.8.25",
-    "babel-loader": "^5.3.2",
+    "babel-cli": "^6.10.1",
+    "babel-core": "^6.10.4",
+    "babel-loader": "^6.2.4",
+    "babel-plugin-add-module-exports": "0.2.1",
+    "babel-polyfill": "6.9.1",
+    "babel-preset-es2015": "^6.9.0",
+    "babel-preset-react": "^6.11.1",
+    "babel-preset-stage-1": "^6.5.0",
     "base64-js": "0.0.8",
     "coffee-loader": "^0.7.2",
     "coffee-script": "1.6.2",

webpack.config.babel.js

@@ -1,2 +1,3 @@
+import 'babel-polyfill'
 import webpackConfig from './frontend_build/baseWebpackConfig'
-export default webpackConfig
+export default webpackConfig

webpack.production.config.babel.js

@@ -1,3 +1,4 @@
+import 'babel-polyfill'
 var webpack = require("webpack");
 var baseWebpackConfig = require("./frontend_build/baseWebpackConfig");
 var productionWebpackConfig = baseWebpackConfig;

webpack.test.config.babel.js

@@ -1,3 +1,4 @@
+import 'babel-polyfill'
 var webpack = require("webpack");
 var I18nPlugin = require("./frontend_build/i18nPlugin");
 var ClientAppsPlugin = require("./frontend_build/clientAppPlugin");