0.4.2

Fixes the invisible Approve link on the Partners screen.

WordPress core CSS globally hides row actions whose key is approve (a rule meant for the comments list, where Approve only shows on unapproved rows). The partner approval action was registered under that key, so provisional partners had no visible way to be approved. The action is now registered as approve_partner; behavior and the form handler are unchanged.

No other changes since 0.4.1.