This handler simply allows arbitrary Ruby code as a template

Fixes #2394

Allow access to current object_counter variable from layout when rendering with partial + collection

Closes #5025 part 2

Closes #5025

Reset memoized hash keys when new ActionView::Template handler is registered
Conflicts:

	actionpack/lib/action_view/template/handlers.rb

Fix deprecation warnings in action pack test suite due to passing template formats in the template name.

Allow both sym and array for details options in #render. using LC#registered_details to extract options.

For example, calling hello.erb is now deprecated. Since Rails 3.0
passing the handler had no effect whatsover. This commit simply
deprecates such cases so we can clean up the code in later releases.

it is now possible to pass details options (:formats, :details, :locales, ...) to #render, #find_template and friends. this doesn't change anything in global context.

Deprecate ActiveModel::Name#partial_path. Now you
should call #to_path directly on ActiveModel
instances.

Deprecate ActiveModel::Name#partial_path. Now you
should call #to_path directly on ActiveModel
instances.

To make sure it will show block contents if it is placed after 'render
:partial'

[#5557 state:resolved]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

[#6222 state:committed]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>