Updated mediawiki/extensions
Project: mediawiki/extensions/WikiForum  86b4e30510088c67a0433e7f90a51deb340cd006

i18n: Add missing messages

- Fix message key "wikiforum-error-no-text-or-title"
- Add missing "wikiforum-error-*" messages
- Fix indentation

Change-Id: Icd62a82028e8cef4db74cd84110a61fe57c850e9