Switched the Server's Loader and LoaderCallbacks to use an ArrayList instead of an array to account for the flexibility of adding in a default server
Set it up so that when the default OSM layer isn't included in the project, an OpenStreetMap server gets added to the ServerListAdapters data.  Disabled the deleteButton for that server in the Servers dialog
Modified the AddLayersListLoader to add the default OSM layer if the selected server is the default OSM server.  Also modified the ServerLoaderCallbacks to trigger the AddLayersList to update when the Servers list gets updated.  Otherwise the AddLayersList wouldn't get updated if a new server took the selected index in that Servers drop down.
Added a method to update whether the project should include the default layer and modified the LayersListAdapter and AddLayersDialog to use it