[config] let user know if they are unsetting a non-existent config key
[config] let user know if they are unsetting a non-existent config key

elia/dokku,jimjag/dokku,claytonbrown/dokku,alexquick/dokku,alexquick/dokku,alexquick/dokku,claytonbrown/dokku,jimjag/dokku,progrium/dokku,elia/dokku,claytonbrown/dokku,progrium/dokku,dokku/dokku,elia/dokku,dokku/dokku,jimjag/dokku,alexquick/dokku,alexquick/dokku,jimjag/dokku,progrium/dokku,dokku/dokku,progrium/dokku,claytonbrown/dokku,claytonbrown/dokku,dokku/dokku,elia/dokku,jimjag/dokku,claytonbrown/dokku,dokku/dokku,progrium/dokku,claytonbrown/dokku,alexquick/dokku,progrium/dokku,elia/dokku,alexquick/dokku,elia/dokku,progrium/dokku,elia/dokku,jimjag/dokku,alexquick/dokku,dokku/dokku,dokku/dokku,dokku/dokku,jimjag/dokku,jimjag/dokku,elia/dokku,progrium/dokku,claytonbrown/dokku