Dynamically define PostgreSQL Range OIDs

The Ruby Range object does not support excluding beginnings.
We currently support excluding beginnings for some subtypes using
manually by incrementing them (now using the `#succ` method).
This is approach is flawed as it's not equal to an excluding beginning.

This commit deprecates the current support for excluding beginnings.
It also raises an `ArgumentError` for subtypes that do not implement the `succ`
method.

This is a temporary solution to get rid of the broken state. We might still
add complete support for excluding beginnings afterwards. (Probably with a
new `PGRange` object, which acts like a `Range` but has excluding beginnings.

This gets AR working with custom defined range types. It also
removes the need for subtype specific branches in `OID::Range`.

This expands the interface of all `OID` types with the `infinity` method.
It's responsible to provide a value for positive and negative infinity.

See #13875

Added warning when user tried to create model with pluralize name.

  1. Generate model with correct_name.
  2. It will help new users to avoid mistakes when tried to create model with wrong name.

Fixed typo in comment about MAX_ID.

Distinguish ConnectionNotEstablished messages: no conn pool for the class, or no conn available from the pool

Prevent foreign_key_for? from evaluating all attributes

This reverts commit e0a521cf.

Conflicts:
	railties/CHANGELOG.md

We expect loggers to quack like stdlib logger. If log4r needs different
level= assignment, using a Logger-quacking wrapper is the way to do it.

Fixes #14114.

GitHub is now able to notify tag creation, I have configured the webhook
for the docs server to receive that event. Therefore, we no longer need
to trigger docs generation manually when releasing.

update guides to new version of rails 3.2.x, i.e. 3.2.17 [skip ci]

This reverts commit 5e3d466d.

Fix `render_to_string` when called via manually instantiated controllers

closes #14125

Fix the javascript path in guide for asset modules [skip ci]

Fix collection proxy exists? regression

[related #14116]

This reverts commit f9e4c3c7.

[fixes #14116]

change 'assert !' to 'assert_not' in guides [ci skip] 

Add note to silence_stream and quietly. [skip ci]

State that on the doc.

[fixes #11954]

Close the meta tag with '/>' instead of '>'

This change fixes the 42 instances of `end tag for "meta" omitted, but
OMITTAG NO was specified` error message that comes up when the full
railsguides are validated.

Full error list at
https://gist.github.com/prakashmurthy/9086679.

The errors were introduced in e220a34e

Update Docs in favor to use render plain instead of text option

ref #14062

Typo fix for unscope [ci skip]