Allowing Miles to drive.
Tests and sketch implementation of not_staff scope.

It doesn't work and we don't yet know why :-(
Give new users a free account.
Updated .gitignore to include coverage files anywhere in the directory tree.
Create free account type if it doesn't exist; fix tests.
Remove "if account_type" checks in Account.

 - remove account_type_string method
 - simplify paid_until_string.
Use ActiveRecord methods for not_staff join code.

 - set member.account_type directly in tests, because changes to
   member.account.account_type weren't being persisted.
Rake task to give everyone free accounts; fix descriptions.
Fix pending tests in views/shop/index.

We needed to stub out current_member, not current_user.
Deleted unused admin_helper_spec.rb
Slightly simplify tests for not_staff scope.

There's no reason to set a location on the test member.