Add an option to set the member of the card

[nnog]

Enhancement idea: Add a form option to set the member of the card, and add a setting to make this default to the user that is logged in (if the user is a member of the target board.) without additional clicks.

[dospolov]

@nnog Here is another extension Trello Bookmark, that does have labels, cover, assignee and due date
https://chrome.google.com/webstore/detail/trello-bookmark/ephoopolmejjnjkbbdcfgoohokhnekca