Move config/database.yml to database.example.yml, for developer freedom

Conflicts:

	.gitignore
Rely on the spatial_adapter gem rather than plugin, and bump to 1.1.2, which is compatible with Rails 2.3
Conflicts:

	config/environment.rb
Update to Rails 2.3 - application_controller rename and schema format updated, otherwise nbd.  Specs pass.
Conflicts:

	db/schema.rb
Update to Rails 2.3 - application_controller rename and schema format updated, otherwise nbd.  Specs pass.
Conflicts:

	app/controllers/application.rb
	app/controllers/application_controller.rb
	db/schema.rb
	vendor/rails/railties/helpers/application.rb
Readme: add line about rubygems version required.
Use regex \d shorthand
Drop default routes
Drop unused districts/index
Name the routes
Conflicts:

	app/views/districts/_icons.html.erb
	config/routes.rb
Drop apparnently unused js