Lesson41 -- Implementing upload photos of employees into database, and get images from database. Images stores with BLOB type.

1) Adding 'PortraitDao', 'PortraitService' and 'PortraitService' classes to implement current task. Service successfully getting images from DB, but (I don't know why) can't correctly uploading images from JSP pages into database.

2) Some styles were changed in 'styles.css' -> only for shifting image column from main employee information.

3) For images in 'employeesChanging.jsp' adding form with post method to upload image. That's all.

To be continued...