#1146 finsih UI work for access mode of collaborators

Collaborators have write access as default, and can be changed via repository
collaboration settings page to change between read, write and admin.

routers/admin/auths.go

@@ -5,6 +5,8 @@
 package admin
 
 import (
+	"fmt"
+
 	"github.com/Unknwon/com"
 	"github.com/go-xorm/core"
 
@@ -218,11 +220,13 @@ func DeleteAuthSource(ctx *middleware.Context) {
 	if err = models.DeleteSource(source); err != nil {
 		switch err {
 		case models.ErrAuthenticationUserUsed:
-			ctx.Flash.Error("form.still_own_user")
-			ctx.Redirect(setting.AppSubUrl + "/admin/auths/" + ctx.Params(":authid"))
+			ctx.Flash.Error(ctx.Tr("admin.auths.still_in_used"))
 		default:
-			ctx.Handle(500, "DeleteSource", err)
+			ctx.Flash.Error(fmt.Sprintf("DeleteSource: %v", err))
 		}
+		ctx.JSON(200, map[string]interface{}{
+			"redirect": setting.AppSubUrl + "/admin/auths/" + ctx.Params(":authid"),
+		})
 		return
 	}
 	log.Trace("Authentication deleted by admin(%s): %d", ctx.User.Name, source.ID)