Bug: Wiki not work properly

[nidgetgod]

• Gitea version (or commit ref):1.1.0
• Git version:1.8
• Operating system:
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist:

Description

1. Couldn't save after edited page with Chinese title, but work in create/delete page.
2. After create first page on Wiki and then delete all page, can't create new page with 500.
   Must Erase Wiki Data and re-enable Wiki.