Update autoforms to use graphql mutations for shop settings

[kieckhafer]

With the removal of the Security meteor package, any autoform forms left in the codebase no longer work. These should all be updated to new form fields that use GraphQL for their mutations.

autoforms remaining, in order of most importance to update:

• Shop Settings (https://github.com/reactioncommerce/reaction-admin/blob/trunk/imports/plugins/core/dashboard/client/templates/shop/settings/settings.html#L19:L19) & (https://github.com/reactioncommerce/reaction-admin/blob/trunk/imports/plugins/core/dashboard/client/templates/shop/settings/settings.html#L46:L46)

The mutations for these forms already exist, therefore this is not a blocker for 3.0, but a nice-to-have for the reaction-admin.

Once these are removed, we can remove the aldeed:autoform package.

[willopez]

breaking issue into multiple issues:
#227
#226
#229