add modifyGoodsCtrl.js to index.html
add route && controller to app.js
add modify function to GoodsInformationCtrl
add change function && getItem function to goodsInformationService
add modifyCategory.html && add href to change button in goodsInformationManager.html
add modifyGoodsCtrl.js
add modifyGoodsInformation.html
update ModifyGoodsCtrl
update goodsInformationService
update modifyGoods.html
modify localStorage list
add modifyCategory.js to index.html
modify controller in app.js
add Category Modify function to CategoryCtrl
add modifyCategory function to categoryService && add alert when remove category
update html which  relate to modifyCategory
add modifyCategory to controllers