Make sure components are not reliant on a $config

[ajrothwell]

The following components requre a $config object and do not handle for if there is not one

AddressCandidateList.vue
AddressInput.vue
Checkbox.vue
Greeting.vue
Topic.vue
TopicComponent.vue
TopicSet.vue

Now that the library is supposed to be useable by things other than Mapboard, every component should at least handle for being put into an template without being passed an object called $config