new structure; code polish

common/.babelrc

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+{
+  "presets": ["es2015", "react", "stage-3"]
+}

common/enums.js

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+export const AD_TYPE_SALE = 1;
+export const AD_TYPE_RENT = 2;
+
+export const IGNORED_USERNAMES = ['rental']
+
+export const CATEGORY_FLAT = 0;
+export const CATEGORY_HOUSE = 1;
+export const CATEGORY_OFFICE = 2;
+export const CATEGORY_LAND = 3;
+export const CATEGORY_APARTMENT = 4;
+export const CATEGORY_GARAGE = 5;
+
+export const STATUS_NORMAL = 0;
+export const STATUS_RESERVED = 1;
+export const STATUS_SOLD = 2;
+