Fix info page style [ci skip]

Add join table migration generator to usage help. [ci skip]

[ci skip]

[ci skip]

Also changed the exception to UnpermittedParameters

Exception on unexpected params when enabled.

This reverts commit 162e2859.

This commit was added by mistake, sorry 🙇

- Reverting #a3cf03ef fixes the issue

Conflicts:
	activerecord/test/cases/relations_test.rb

This method doesn't need to be in the class, since it's only used only
from the instance.

Other minor changelog improvements [ci skip]

added marshal_load and marshal_dump for ProxyTestResult. Behavior of met...

added marshal_load and marshal_dump for ProxyTestResult. Behavior of method_missing with Marshal.dump and Marshal.load is changing in ruby 2.0.0 later.

Small typo fix in railties/CHANGELOG.md

Allow environment name to start with a substring of the default
environment names.

Fixes #8628

fix failing test broken in 15fb7889

Better error message for String#to_date

Support for PostgreSQL's ltree datatype

Misleading error message that prompts non-existing command [ci skip]

[ci skip]

get rid of unused .empty_directory files in the app generator

I did this because to_date gives a very unhelpful error message if you
do not pass in a correct date. In the process I think this cleans up the
 code nicely and even better it tends to be slightly faster than the
 current implementation.

Benchmark
https://gist.github.com/4440875

Remove unnecessary `ERB::Util::h`

It is automatically applied when strings is unsafe for html.

Remove dangling whitespace in generated database yml files for postgresql and sqlserver [ci skip]