This commit breaks all exception catching plugins like ExceptionNotifier. These plugins should be rewritten as middleware instead overriding Controller#rescue_action_in_public.

Remove RewindableInput middleware since all input MUST be rewindable according to a recent change in the Rack 1.0 SPEC

Eventually commit ActionDispatch::Test::MockRequest and ActionDispatch::Test:: UploadedFile upstream.

Add config.preload_frameworks to load all frameworks at startup. Default to false so Rails autoloads itself as it's used.

Signed-off-by: NDavid Heinemeier Hansson <david@loudthinking.com>

I18n: Introduce I18n.load_path in favor of I18n.load_translations and change Simple backend to load translations lazily. [#1048 state:resolved]
Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

Harmonize framework require strategy. Don't add self to load path since Rails initializer and RubyGems handle it.

Refactor template preloading. New abstractions include Renderable mixins and a refactored Template class.

standarize on. Also, in future this place can be used for data/code that's
not literally translations but conceptually belongs to the locale (like
custom pluralization algorithms etc.).

client libraries to the backend: clients now can pass a block to
backend#populate which can contain code to load and register translations.

This makes sense for backends that persist their translations (e.g. to db)
so the repeated loading and passing of translations throughout the server
startup would be wasted resources.