Improved model package. The details are as follows:

* Fix the Profiles class from package object to simple object
* Fix the row case class to model package
* Define the alias of JdbcBackend#Session

src/main/scala/service/AccountService.scala

@@ -1,9 +1,10 @@
 package service
 
-import model._
+import model.Profile._
 import profile.simple._
+import model.{Account, GroupMember}
 // TODO [Slick 2.0]NOT import directly?
-import model.dateColumnType
+import model.Profile.dateColumnType
 import service.SystemSettingsService.SystemSettings
 import util.StringUtil._
 import util.LDAPUtil