Suggestion: make language switching available in official web help for 11.10 and 12.04 desktops

[Sergey Papilin]

I discovered that https://help.ubuntu.com/11.10/ubuntu-help/ and 
https://help.ubuntu.com/12.04/ubuntu-help/ site directories are 
available in several different languages, but there is no way to switch 
between them on the site itself.

Currently, to access them, you need to manipulate Accept-Language 
request header in your browser. In Firefox, it can be done
(1) by editing intl.accept_languages preference at about:config page,
(2) in Preferences->Content->Languages window or
(3) by using an extension like Quick Locale Switcher.

I think it's better practice for multi-language site to provide some 
control to select the language. It will make difference when a user is 
not sure he/she understands a sentence in his/her current language 
correctly and wants to consult the same page in another, or suspects a 
translation mistake. It will make checking translations for mistakes 
on-line faster and easier.