This technique is here to allow using routes from Engine in Application
and vice versa. When using Engine routes inside Application it should
generate prefix based on mount point. When using Engine routes inside
Engine it should use env['SCRIPT_NAME']. In any other case it should
generate prefix as env should not be even available.

Move singleton pattern to Railtie and remove Engine::Configurable and Application::Configurable in favor of unified Railtie::Configurable

We don't need to add railties initlaizers in Application as there is already done in Engine and it's called with super

Removed ActionDispatch::Static, but left empty MiddlewareStack to unify app method between Engine and Application

too many people are looking for the 2.3 guides, put by now a link at the top of the home, and add the Rails version in the main header

Signed-off-by: NMichael Koziarski <michael@koziarski.com>

Booting a new Rails application does not work after this commit [#5359 state:open]

This reverts commit 38a421b3.

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Ensure routes are loaded only after the initialization process finishes, ensuring all configuration options were applied.

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Now it's more transparent, and readable
Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NXavier Noria <fxn@hashref.com>

Signed-off-by: NXavier Noria <fxn@hashref.com>