Fix .update_all and .delete_all when using a condition on a joined table
in a default_scope.

`Model.joins(...).where(condition_on_joined_table).update_all` /
`delete_all` worked, but the same operation implemented with a
default_scope generated a SQL error because ActiveRecord ignored the
join but implemented the where condition anyways.
Collection radio buttons and collection check boxes through FormBuilder render
the provided block.

In the case of having a form_for method being called, the block for each
collection would not be passed and thus the result expected was always the same.
This patch passes the block to the original method like it would be assumed.
`CollectionAssociation#empty?` respects newly builded records
Adding tests for ActiveModel::Model

* Verifying persisted? is false when Model initialized
* Passing nil to Model should not blow up
* Changing test name to the one suggested in pull request comment
Associaton -> Association
Remove WIP from Working With JavaScript Guide.

Now that we've fixed the fibs example, this is good to go.
Allow value to be set on date_select
Merge pull request #8925 from colinbm/date_select_value

Allow to override the value on date_select
Merge pull request #8917 from adomokos/adding_more_tests_to_activemodel_model

Adding tests for ActiveModel::Model
Add regression test to #8907
Merge pull request #8916 from josemota/collection-with-block

Collection radio buttons and collection check boxes through FormBuilder render the provided block.

Closes #8897
Test to allow Range including DateTime and DateTime::Infinity

Closes #8587
rake railties:install:migrations respects the order of railties
Revert benchmark helper regression. Use a #capture within a #benchmark
block. Breaks benchmark calls that return non-String values otherwise.

Revert "add benchmark helper that works in erb"

This reverts commit 904e544cc8f5846de7c31827bb5556c6a238c0de.

Conflicts:
	actionpack/lib/action_view/helpers.rb
	actionpack/lib/action_view/helpers/benchmark_helper.rb
	actionpack/test/template/benchmark_helper_test.rb
Rename :value option to :selected, in line with other select helpers
Add tests for time & datetime.
Add documentation.
Address test_create_when_database_exists_outputs_info_to_stderr failures

When tested with ruby-2.0.0-rc1 `rake test` executes this test
even if the target adapter is not mysql nor mysql2.
test for ActiveModel::Conversion#to_partial_path and namespaced models
Merge pull request #8938 from colinbm/date_select_value

Rename :value to :selected for date_select, and add missing tests/docs
Merge pull request #8939 from senny/to_partial_path_test_to_prevent_regressions

test case for ActiveModel::Conversion#to_partial_path and namespaced models
Merge pull request #8942 from yahonda/tested_only_with_mysql

Address test_create_when_database_exists_outputs_info_to_stderr failures