Discord invite fixed

The previous Discord invite was unavailable. We updated the website's links to the valid invite to the ScrollOfMana community.

To join the community, use Discord in the menu or footer, or click Join Discord in the community section on the homepage. The support link in password recovery also uses the updated invite.

What changed

• Discord invite updated in the menu, footer and community section.
• Help links and password recovery support point to the same valid invite.
• Community address updated in Portuguese and English, including the page without JavaScript.