Use Log::, fix coding style issues.
Merge branch 'master' of github.com:supertuxkart/stk-code
Added 'always-show-login-screen' option, moved 'remember-password'
option from UI-options to UserScreen.
1) Fixed saving of sessions ('save-session=1' was sent instead of
'save-session=true').
2) Made logout request same priority as stk-quit request, which means
that the logout request will executed before the quit, resulting
in players properly being marked as logged out.