Fix a typo in caching with rails guide

In this section we are actually updating 'my_new_branch'

Fix small typo a link to bundler page in development_dependencies_install.md 

(incorporating feedback from a newbie)

Conflicts:
	activerecord/lib/active_record/persistence.rb
	railties/lib/rails/generators/rails/resource_route/resource_route_generator.rb

This reverts commit 1c02b988.

This reverts commit 93b1ca8b.

Fix AS::Cache version upgrading bug

Remove old asset tag concatenation

Use sprockets, jammit, or some other asset bundler

Add missing CHANGELOG relating to addition of callbacks to mailers

Revert "Add changelog/release note entries for missing ActionMailer super feature related to inclusion of callbacks in mailers"

This reverts commit f16ec8c8.

Add changelog/release note entries for missing ActionMailer super feature related to inclusion of callbacks in mailers

warning fixed: ambiguous first argument; put parentheses or even spaces

fix typo in "The Rails Initialization Process"

Fix has_many assocation w/select load after create