Make the anonymous public board

[lpatmo]

- screenshot of gif created by @distalx

Each card should look something like this:

Or alternatively, each card would only contain the "more description" value the user filled in, but mousing over the card would show a popover containing the one-line intro and timezone:

[lpatmo]

Another mockup of the public board:

[lpatmo]

This is pretty much done, though individual cards will need some extra work -- e.g.:

• Clicking on the heart will put the entry into a user's list of preferences
• Users should be able to edit a previously submitted, unmatched entry
• Users should be able to flag an entry for spam

I'll file separate issues for the ideas above.