bump react-bootstrap version (#3723)

1. avoid exports is not defined error
2. per jordan's suggestion, update .babelrc only use airbnb presets

superset/assets/.babelrc

@@ -1,3 +1,3 @@
 {
-  "presets" : ["airbnb", "env", "react"],
+  "presets" : ["airbnb"],
 }

superset/assets/package.json

@@ -70,7 +70,7 @@
     "react-addons-css-transition-group": "^15.6.0",
     "react-addons-shallow-compare": "^15.4.2",
     "react-alert": "^2.3.0",
-    "react-bootstrap": "^0.31.2",
+    "react-bootstrap": "^0.31.5",
     "react-bootstrap-table": "^4.0.2",
     "react-color": "^2.13.8",
     "react-datetime": "2.9.0",
@@ -106,8 +106,6 @@
     "babel-plugin-css-modules-transform": "^1.1.0",
     "babel-polyfill": "^6.23.0",
     "babel-preset-airbnb": "^2.1.1",
-    "babel-preset-env": "^1.6.0",
-    "babel-preset-react": "^6.11.1",
     "chai": "^4.0.2",
     "clean-webpack-plugin": "^0.1.16",
     "codeclimate-test-reporter": "^0.5.0",