Removed duplicated code

client/reducers/error.js

@@ -14,6 +14,7 @@ const initialState = {
   auth: '',
   domain: '',
   shortener: '',
+  urlOptions: '',
 };
 
 const error = (state = initialState, action) => {
@@ -23,7 +24,6 @@ const error = (state = initialState, action) => {
     case DOMAIN_ERROR:
       return { ...state, domain: action.payload };
     case SET_DOMAIN:
-      return { ...state, domain: '' };
     case SHOW_DOMAIN_INPUT:
       return { ...state, domain: '' };
     case ADD_URL:

client/reducers/loading.js

@@ -48,21 +48,17 @@ const loading = (state = initialState, action) => {
     case SHORTENER_LOADING:
       return { ...state, shortener: true };
     case ADD_URL:
-      return { ...state, shortener: false };
     case SHORTENER_ERROR:
       return { ...state, shortener: false };
     case LIST_URLS:
-      return { ...state, table: false };
     case DELETE_URL:
       return { ...state, table: false };
     case AUTH_ERROR:
-      return { ...state, login: false, signup: false };
     case AUTH_USER:
       return { ...state, login: false, signup: false };
     case DOMAIN_LOADING:
       return { ...state, domain: true };
     case SET_DOMAIN:
-      return { ...state, domain: false };
     case DOMAIN_ERROR:
       return { ...state, domain: false };
     case API_LOADING: