Update OAuth extension

[eloiferrer]

I had to temporarily downgrade the OAuth extension to branch wmf/1.45.0-wmf.25 because branch wmf/1.46.0-wmf.1 throws this error:

Deprecated
: $wgMWOAuthSharedUserIDs=false is deprecated, set $wgMWOAuthSharedUserIDs=true, $wgMWOAuthSharedUserSource='local' instead [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/w/includes/HookContainer/HookContainer.php at line 141] in
/var/www/html/w/includes/Debug/MWDebug.php
on line
372

Adding:

$wgMWOAuthSharedUserIDs=true;
$wgMWOAuthSharedUserSource='local';

as suggested by the warning just broke the functionality of OAuth resulting in time out errors.

We should test again in some weeks whether a newer version of the extension fixes the problem.

[eloiferrer]

Here the PR for the downgrade #235