repair the activesupport message encryptor tests for me, do so in the same way as jeremy did with message verifier

[#4517 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Conflicts:
	railties/guides/source/index.html.erb

RouteSet does not raise ActionController::RoutingError when no routes match anymore. Instead, it follows the X-Cascade convention. ShowExceptions checks for X-Cascade so that the routing error page can still be displayed.

Provide a mechanism for overriding the entire generator via a class that handles the individual elements of generating a new Rails application

Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Ancillary changes: Moved Chars#normalize into a class method; removed
unused UTF_PAT constant.
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>

Update after_commit and after_rollback docs and tests to use new style API with an :on options instead of on_* suffix.

[#2991]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Add after_commit and after_rollback callbacks to ActiveRecord that are called after transactions either commit or rollback on all records saved or destroyed in the transaction.

[#2991 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>