Revert "In app_generator, fix hardcoded `bundle` call to derive the bundle executable name from Thor::Util.ruby_command."

This reverts commit 6f4c4519.

This breaks the tests. Please investigate.

In app_generator, fix hardcoded `bundle` call to derive the bundle executable name from Thor::Util.ruby_command.

This ensures that eg. when `rails` is called from `ruby1.9`, `bundle1.9` is called.
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>

Use non-deprecated Rails.application instead of ActionController::Dispatcher.new and ActionDispatch::Integration instead of ActionController::Integration for console.

[#4072 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Have log subscribers subscribe to the actual events, so the subscriber doesn't subscribe to *every* event, so we can have events that are slow-ish but are not actually run in production.