做一个产品级别的liftwebDemo应用；
包括完整的论坛，公告，新闻，投票，权限控制，全文搜索；
测试model:
> console
[info] Starting scala interpreter...
[info]
Welcome to Scala version 2.8.1.final (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_26).
Type in expressions to have them evaluated.
Type :help for more information.
scala> import liftbbs.model._
import liftbbs.model._
scala> import org.squeryl.PrimitiveTypeMode._
import org.squeryl.PrimitiveTypeMode._
scala> import BbsModel._
import BbsModel._
scala> BbsModel.init()
scala> inTransaction( for (f <- BbsModel.forums) { println(f.name) } )
默认板块
scala>