Modify UserPageServlet (add cheking user or admin), validate
CreateCategoryServlet, modify adminProfile
Add rating system. Create RatingDAO, RatingService, RatingTransformer,
RatingServlet, Rating model, add-rating.js. Update UserWallServlet and
user_wall.jsp
Update user_wall.jsp
Fix rating bugs
Load avatar part
zoom
validation in user room
Add legalNotice.jsp
some changes
no change
Merge branch 'reka' into Pavlo

Conflicts:
	BuyIt/WebApp/jsp/adminProfile.jsp
	BuyIt/src/main/java/com/epam/lab/buyit/controller/web/servlet/CreateCategoryServlet.java
Merge remote-tracking branch 'origin/aleg' into Reka-left

Conflicts:
	BuyIt/WebApp/WEB-INF/web.xml
	BuyIt/src/main/java/com/epam/lab/buyit/controller/web/servlet/UserPageServlet.java
Add buttons blocking in item_preview.jsp when current user is product
seller.