Start to implement issue labels.

src/main/scala/service/LabelsService.scala

@@ -0,0 +1,19 @@
+package service
+
+import scala.slick.driver.H2Driver.simple._
+import Database.threadLocalSession
+import scala.slick.jdbc.{StaticQuery => Q}
+import Q.interpolation
+
+import model._
+import Labels._
+
+trait LabelsService {
+
+  def getLabels(owner: String, repository: String): List[Label] =
+    Query(Labels)
+      .filter(l => (l.userName is owner.bind) && (l.repositoryName is repository.bind))
+      .sortBy(_.labelName asc)
+      .list
+
+}