UI: Number of repositories is negative

[cez81]

• Gitea version (or commit ref): 1.0.0+310-gd077fd0
• Git version: 2.7.4
• Operating system: Ubuntu 16.04
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist: https://gist.github.com/cez81/32810d96237532fbc89571ef2e9ec1f9

Description

Deleted a couple of big repositories using the admin panel. As the operations took quite long and I thought I might have misclicked I clicked again on one of them. Now number of repos for the user is showing as -1. Actual number of repos for the user is 0.
Maybe possible to add a progress spinner or something?

Screenshots