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/IssuesService.scala

@@ -3,8 +3,9 @@ package service
 import scala.slick.jdbc.{StaticQuery => Q}
 import Q.interpolation
 
-import model._
+import model.Profile._
 import profile.simple._
+import model.{Issue, IssueComment, IssueLabel, Label}
 import util.Implicits._
 import util.StringUtil._