Update database

Add new column 'point' to collection 'Product'. It define product's
point which customer will get.
Add real database & more (See extend description)

- Add ChangeDatabaseLog (and Guide to import/export)
- Add dump file for product and productDetail
- Revert init file
- Fix some collection name
Fix manufacturer construct
Add guide import/export
Merge branch 'develop' of https://github.com/rubikill/JavaPhanTan into develop

Conflicts:
	JavaDACK/src/main/java/co/hcmus/app/Initialization.java