Use the new urls for battle.net dev.

The "new" dev website is https://dev.battle.net/.
Using it mean a change in the base url, mainly
https://%(region)s.api.battle.net/%(game)s%(path)s?apikey=%(apikey)s&%(params)s
instead of
https://%(region)s.battle.net/api/%(game)s%(path)s?%(params)s

One of the important change is that every application who want to use it
must have a api key.
Name of a realm keep the case.

So, we need to compare with lowercase().
Hit and expertise no more exists.
Update tests to use existing chars/guilds/realms.