Fix Rails::Paths::Root documentation

Database.rake file fixed for load_generators

Using load_generators

Remove Railties deprecated methods

load_generators_from_railties was removed, remove test with error about it

Fixed failing tests for generators_test

Move SCSS generators and default templates from Rails to the Sass Railtie (d435726312601edb3ba6f97b34f562221f72c1f8).

* Sass gem registers a compressor
* Sass gem registers generators for assets and scaffold
* Create a default stylesheet_engine ("css") for apps that remove the Sass gem

Change compressor API so that plugins can register default compressors for their stylesheet or JS engines and still allow the user to turn off compression

corrected/fixed the ActionMailer tests

removed deprecated methods, and related tests, from ActionPack

Ignore :includes on through associations

Ensure that the surrounding code in Relation#to_a respects the default_scope (as well as having Relation#arel respect the default scope). Fixes #1233.

Use quotes consistently in Gemfile

Use quotes consistently in Gemfile

Use set data structure to speed up circular reference checks on large/deeply nested objects

Fixes Rake::RDocTask deprecation warnings from Rake 0.9.0