Javascript errors and site half-broken if we add * in markdown_linkify_tlds setting

[maiki]

I can reproduce with 2.9.0.beta3 4d809e984d.

Attempting to publish a new topic returns a 500 error.

@Canapin

(or allow them? there are so much valid domain extensions nowadays…)

I agree, if I found a domain not linking correctly, adding * to the setting would be my first move.