Have a better/clearer way of displaying TCR entry thumbnails

[gmkung]

Currently, the preview thumbnail of TCR entries can be very hard to read if there are long strings involved (see screenshot).

Two suggestions:

• Add the field description in the card so we know what the values represent
• Truncate long strings so they do not overflow and clutter the cards.

Another (slightly more drastic) suggestion is to simply put everything in a tabular format, so that field names are only repeated once at the top.

[gratestas]

@gmkung @greenlucid can we also write down generic specs of field names? Definitely, it will be better to know what value should represent each of them.