This way we can adapt the settings in the future to use the most
commonly changed items first.
We're not logging the 'gitAuthor' or 'gitEmail' as that includes
personally identifyable info.
* Use a DialogBox instead of a drop-down - This conforms better to the
Material design spec.
* Make the enum into a class. It makes managing it much easier. And
avoids code duplication.
Now show how big the font will be in a dialog. This way the user can
make a more informed decission, instead of just choosing "Small" vs
"Normal" and not knowing how big that actually would be.
