- In some cases it seems we need to set both the key and value in the
  #default_values array to the project nid so that the audience "sticks".
- Handle the case where the user isn't actually presented with a form
  element, but instead there's the "simple" mode of the audience form.

$form['nid']['#value'] instead of $form['project'], since we want to
define $form['project'] when editing release nodes, not just during add.

to automatically keep project content (releases and issues) associated
with the OG of the parent project. Also fixes links in the Group
details block for creating this content to include the project info.

Also, we don't currently depend on project_issue, so removed that.

- Add the .info file and move the help description there.
- Fix up the weights of the buttons on the follow-up form.