Don't return json error but null if card can't be parsed.
Small check for non-parsable card in index.php.

using new image backend, moving ajax calls to one file, using generated thumnails to speedup covers loading

Set REV for each edit.
Download single VCard.

Use jQuery Dialog for error messages instead of alert()

Return standard thumbnail even if contact couldn't be found as it could be because it was just added,

Added some tipsys to the editor.