(refs #241)Modify AccountService#getGroupMembers() to returns list of GroupMember instead of Tuple2

src/main/scala/service/AccountService.scala

@@ -129,11 +129,10 @@ trait AccountService {
     }
   }
 
-  def getGroupMembers(groupName: String): List[(String, Boolean)] =
+  def getGroupMembers(groupName: String): List[GroupMember] =
     Query(GroupMembers)
       .filter(_.groupName is groupName.bind)
       .sortBy(_.userName)
-      .map(m => m.userName ~ m.isManager)
       .list
 
   def getGroupsByUserName(userName: String): List[String] =

src/main/scala/service/RepositoryService.scala

@@ -204,7 +204,7 @@ trait RepositoryService { self: AccountService =>
 
   private def getRepositoryManagers(userName: String): Seq[String] =
     if(getAccountByUserName(userName).exists(_.isGroupAccount)){
-      getGroupMembers(userName).filter(_._2).map(_._1)
+      getGroupMembers(userName).collect { case x if(x.isManager) => x.userName }
     } else {
       Seq(userName)
     }