新增：分支查询删除分支与普通分支

routers/hat/repo/branch.go

@@ -35,11 +35,20 @@ func ListBranches(ctx *context.APIContext) {
 			ctx.Error(http.StatusInternalServerError, "Load git repository failed", nil)
 			return
 		}
+		var isDeleted util.OptionalBool
+		switch ctx.FormString("state") {
+		case "all":
+			isDeleted = util.OptionalBoolNone
+		case "deleted":
+			isDeleted = util.OptionalBoolTrue
+		default:
+			isDeleted = util.OptionalBoolFalse
+		}
 
 		branchOpts := git_model.FindBranchOptions{
 			ListOptions:     listOptions,
 			RepoID:          ctx.Repo.Repository.ID,
-			IsDeletedBranch: util.OptionalBoolNone,
+			IsDeletedBranch: isDeleted,
 			Keyword:         searchName,
 		}