Separate user settings from app settings

[dotlouis]

for example the object: { templateUrl: "/app/template.html"} is an app setting because it will not be modified by the user.
However the object: card = { name: "bookmarks", enabled: true; } is gonna be modified by the user.

The goal is to better separated theses settings to make the update process easier.
Maybe separated them in one angular.values() for user settings and one angular.constant() for app settings.
This way when updating cardboard, app settings are automatically new. While user settings are kept if compatible (ie. not "major" version as semver describes it)