Client Login() now calls ..() before setting up preferences, ensuring a mob has actually been assigned. Fixes#12560 (and probably other somehow subtle sanitation issues).
The alien whitelist now checks the rights of the supplied mob, not usr.
When granting xeno loadout gear the mob's current species must match the gear's whiteliste species.
While I consider Polaris' character setup screen to be mechanically better
than most others, it wasn't prettier. Well. It was a bit. But now it's
more pretty-er.
Used the fake NanoUI 'browser' datum to render the pages for the New
Player panel and the Character Setup screen.
Also allows gear tweaks to take up a whole row on their own, due to potential length.
Also fixes a couple of incorrect && logical operations. Should have been ||.
