Trade: Provide Send/Cancel UI Immediately After `/trade start`

[zmattingly]

Now provides a paginator and view similar to /trade send immediately after you use /trade start:

Couple other misc bundled tweaks/etc as well.

• Couple corrections to use a user's .display_name rather than .name
• /profile display now uses the last four digits of the user's discord id rather than the now defunct discriminator
• One new clip and two new drops
• Wording change on wishlist dismissal to differentiate it as dismissing the match rather than the message itself