+update to Bid DAO
+Amount field
Change Bid transformer
+ Bid service
Change model
no change in Web.xml and context.xml
Fix AJAX login cheking in login-check.js
Merge remote-tracking branch 'origin/master' into chemodurov
New viewer.
New product viewer.
Fix merge mistakes
Merge remote-tracking branch 'origin/dorosh' into chemodurov
Changes in homePage.jsp
Changes in BidService,ProductService,UserService
Merge remote-tracking branch 'origin/reka' into chemodurov