Add support for listing author tricks

[Larry Barker]

It may be useful to allow users to find tricks by author. Author names can be linked to a listing of the authors tricks, and individual tricks can have a section to show other tricks by the same author.

[Larry Barker]

@tobias-kuendig How is the backend supposed to work? I setup a test account, submitted a trick, and can see it in the Tricks controller. I don't see a way to publish it though? Also tried creating a proposal but am getting an error that the trick_id column does not have a default value.

Either I've done something wrong, or don't understand the process for proposing and accepting tricks.

Thanks!

[Larry Barker]

See #17