support Test with everything init

session provider for postgresql

This provider is based on the mysql provider: sess_mysql.go

validators bug fixed

(REF#519) Enhancement: Allow developer to set FlashName and FlashSeperator values

Update router.go

Update beego.go - Slice types exist trap

To append a slice's value into "exceptMethod", for controller's methods shouldn't reflect to AutoRouter

Modify the file beego.go. 
Type GroupRouters all function 
Slice types exist trap bug.

Couchbase session provider

Conflicts:
	session/sess_file.go