Keep ./spec/dummy/db dir around

When pulling radiant down and running the specs the tests will fail
initially because the db directory isn't there - therefore cannot create
the test sqlite file. This commit ensures spec/dummy/db sticks around
Merge pull request #358 from jayroh/jro-gitkeep-dummy-db-dir
set cookie header to private for Radiant::Cache
move Admin namespace to Radiant
use the latest will_paginate
require resource_responses in resource controller
update namespacing in pagination/controller.rb to avoid missing constant error
require radiant/taggable from deprecated tags
remove LocalTime
clean up class_inheritable_accessor and set_inheritance_column, include Rails 3 url_helpers
require radius from page_context
require simpleton and annotate in text_filter.rb
fix require for annotatable
remove weird object_id_attr and just define a filter method on PagePart
move to rails 3 routes
simplified radiant/cache
comment out use of dataset, remove integrate_views, use Rspec.configure
add config/application.rb
update to rubygems/package_task for change to rake 10.0.3
move test helpers into the spec/support directory