[fix] babel-plugin only rewrites paths for known modules

Don't rewrite import paths for non-existent modules or types. They will
attempt to be imported from the package's main export. This change
currently requires a module map to be generated for the babel-plugin to
use. The map is automatically regenerated for any commit that alters the
entry file of react-native-web.

Fix #822

packages/babel-plugin-react-native-web/src/moduleMap.js

@@ -0,0 +1,61 @@
+// THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT.
+module.exports = {
+  ART: true,
+  ActivityIndicator: true,
+  Animated: true,
+  AppRegistry: true,
+  AppState: true,
+  AsyncStorage: true,
+  BackHandler: true,
+  Button: true,
+  CheckBox: true,
+  Clipboard: true,
+  ColorPropType: true,
+  Dimensions: true,
+  Easing: true,
+  EdgeInsetsPropType: true,
+  FlatList: true,
+  I18nManager: true,
+  Image: true,
+  ImageBackground: true,
+  InteractionManager: true,
+  Keyboard: true,
+  KeyboardAvoidingView: true,
+  Linking: true,
+  ListView: true,
+  Modal: true,
+  NativeModules: true,
+  NetInfo: true,
+  PanResponder: true,
+  Picker: true,
+  PixelRatio: true,
+  Platform: true,
+  PointPropType: true,
+  ProgressBar: true,
+  RefreshControl: true,
+  SafeAreaView: true,
+  ScrollView: true,
+  SectionList: true,
+  Slider: true,
+  StatusBar: true,
+  StyleSheet: true,
+  Switch: true,
+  Text: true,
+  TextInput: true,
+  TextPropTypes: true,
+  Touchable: true,
+  TouchableHighlight: true,
+  TouchableNativeFeedback: true,
+  TouchableOpacity: true,
+  TouchableWithoutFeedback: true,
+  UIManager: true,
+  Vibration: true,
+  View: true,
+  ViewPropTypes: true,
+  VirtualizedList: true,
+  createElement: true,
+  findNodeHandle: true,
+  processColor: true,
+  render: true,
+  unmountComponentAtNode: true
+};