module Shops: optimize code
Merge pull request #1 from nukeviet/develop

Update code from nukeviet shops (28/02/2014)
Fix: Type thumb product
Merge pull request #6 from hongoctrien/develop

Fix: thumb type product
module Shops: fix group, category
Merge pull request #11 from thangbv/develop

Merge pull request #3 from nukeviet/develop
Using javascript jquery ajax instead nv_ajax
Module Shops: change link view detail
Merge pull request #4 from nukeviet/develop

merge from NukeViet