change db to mysql, append requirements
change cabinet template tag
added 'shop' app
add Sale model to shop app
add Brand model to shop app
add Item model to shop app
add Attribute, ItemAttribute models to shop app
add Warehouse, ItemWarehouse models to shop app
added verbose names to model in shop app
fix models in shop app
added locales in shop app
added generate_items command
added media settings
add proxy model for category level0, add image field to item model
fix generate_items and generate_posts commands
change main templates
add media urls for DEBUG mode
added search fields, add image field to itemadmin
added migrations for shop models
add views and urls for shop app