API produces wrong URLs #1482

Hi,

I've found a bug trying to integrate Piwik with Django via Python-piwik.

That one calls SitesManager.getJavascriptTag which is defined as
return self::getCurrentScheme().'://'.self::getCurrentHost(). self::getCurrentScriptPath();

However, on my server, getCurrentHost is sub.domain.tld and getCurrentScriptPath is /http://sub.domain.tld/piwik/ (with both those trailing slashes). So getJavascriptTag produces
http://sub.domain.tld/http://sub.domain.tld/piwik/
which obviously does not work.

This breaks the API.

Should be easy to fix
Greets

Additional information:
$_SERVER['REQUEST_URI'] is used and it contains
http://sub.domain.tld/piwik/?token_auth=[TOKENTOKENTOKEN]&idSite=1&method=SitesManager.getJavascriptTag&module=API&format=json

fixed in r2389 for #1451

That was quite fast.