fix(auth): grab the correct part of the payload for the username

Grab email instead of the non-existent login part of the payload

Fixes #4

application/src/redux/reducers/authReducer.js

@@ -5,7 +5,7 @@ const INITIAL_STATE = { email: null, token: null };
 export default (state = INITIAL_STATE, action) => {
     switch (action.type) {
         case LOGIN:
-            return { ...state, email: action.payload.login, token: action.payload.token }
+            return { ...state, email: action.payload.email, token: action.payload.token }
         case LOGOUT:
             return { ...state, ...INITIAL_STATE }
         default: