It's currently possible for users to create wikis whose name starts with a number, which creates a lot of errors.
Steps to reproduce:
- Login as an admin
- Click on the "Wiki Manager" link on the right in the "Applications" panel
- Click on the "Create a new wiki" link
- Click on the "Switch to normal view mode" link
- Fill in the required fields (create_wiki.png)
- Click "Create"
You'll get an error (error.txt) after clicking on "Create". If you go in the Wiki Manager you'll see the wiki listed there (wiki_manager.png), but if you click on it you'll get another error (error2.txt).