Mostly working user registration

Refactor a bit

Up next: card purchase

package.json

@@ -17,7 +17,7 @@
     "react-native-confetti": "^0.0.6",
     "react-native-config": "^0.6.1",
     "react-native-htmlview": "^0.12.0",
-    "react-native-sentry": "^0.23.2",
+    "react-native-sentry": "^0.25.0",
     "react-navigation": "^1.0.0-beta.11",
     "react-redux": "^5.0.6",
     "redux": "^3.7.2",