Separate language from path in hash

[jdm]

Currently the hash contains both the language and the current path. That's not great for the default linking experience, since the language will override the user's preferred default. We should make the override language a query parameter instead (?zh-TW=1).

[aleksandrs-ledovskis]

That's a valid point you are making.

However there are also some different approaches that might work here. What solution should we take?

1. Remove locale prefix from location hash and convert it to query parameter.
   http://whatcanidoformozilla.org/#!/en/proglang/rust becomes
   http://whatcanidoformozilla.org/?l=en#!/proglang/rust. Please correct me, if I had misunderstood your proposal.
2. Make first parameter of location hash optional.
   http://whatcanidoformozilla.org/#!/proglang/rust becomes
   http://whatcanidoformozilla.org/#!/en/proglang/rust after initial page load for en locale browser.
3. Add two permalink-links on page. One would be for "generic" permalink (w/o locale string), other for "localized" (w/ currently visible locale).

[jdm]

I think I like option 1 here.

[jdm]

I think I would also not append the language query parameter until the language is explicitly changed from the dropdown, too.